diff --git a/apps/regression/go_to_parameter_controller.cpp b/apps/regression/go_to_parameter_controller.cpp
index c27d5109a..31d3b05c3 100644
--- a/apps/regression/go_to_parameter_controller.cpp
+++ b/apps/regression/go_to_parameter_controller.cpp
@@ -8,10 +8,8 @@ using namespace Poincare;
 namespace Regression {
 
 GoToParameterController::GoToParameterController(Responder * parentResponder, Store * store, CurveViewCursor * cursor) :
-  FloatParameterController(parentResponder),
-  m_abscisseCell(MessageTableCellWithEditableText(&m_selectableTableView, this, m_draftTextBuffer)),
+  Shared::GoToParameterController(parentResponder, store, cursor, I18n::Message::X),
   m_store(store),
-  m_cursor(cursor),
   m_xPrediction(true)
 {
 }
@@ -27,15 +25,6 @@ const char * GoToParameterController::title() {
   return "Prediction sachant y";
 }
 
-int GoToParameterController::numberOfRows() {
-  return 2;
-}
-
-float GoToParameterController::previousParameterAtIndex(int index) {
-  assert(index == 0);
-  return m_previousParameter;
-}
-
 float GoToParameterController::parameterAtIndex(int index) {
   assert(index == 0);
   if (m_xPrediction) {
@@ -50,33 +39,26 @@ bool GoToParameterController::setParameterAtIndex(int parameterIndex, float f) {
     app()->displayWarning(I18n::Message::ForbiddenValue);
     return false;
   }
+  float x = m_store->xValueForYValue(f);
   if (m_xPrediction) {
-    float y = m_store->yValueForXValue(f);
-    if (fabsf(y) > k_maxDisplayableFloat) {
-      app()->displayWarning(I18n::Message::ForbiddenValue);
-      return false;
-    }
-    m_cursor->moveTo(f, y);
+    x = m_store->yValueForXValue(f);
+  }
+  if (fabsf(x) > k_maxDisplayableFloat) {
+    app()->displayWarning(I18n::Message::ForbiddenValue);
+    return false;
+  }
+  if (isnan(x)) {
+    app()->displayWarning(I18n::Message::ValueNotReachedByRegression);
+    return false;
+  }
+  if (m_xPrediction) {
+    m_cursor->moveTo(f, x);
   } else {
-    float x = m_store->xValueForYValue(f);
-    if (fabsf(x) > k_maxDisplayableFloat) {
-      app()->displayWarning(I18n::Message::ForbiddenValue);
-      return false;
-    }
     m_cursor->moveTo(x, f);
   }
   return true;
 }
 
-HighlightCell * GoToParameterController::reusableParameterCell(int index, int type) {
-  assert(index == 0);
-  return &m_abscisseCell;
-}
-
-int GoToParameterController::reusableParameterCellCount(int type) {
-  return 1;
-}
-
 void GoToParameterController::willDisplayCellForIndex(HighlightCell * cell, int index) {
   if (index == numberOfRows()-1) {
     return;
@@ -90,31 +72,4 @@ void GoToParameterController::willDisplayCellForIndex(HighlightCell * cell, int
   FloatParameterController::willDisplayCellForIndex(cell, index);
 }
 
-bool GoToParameterController::textFieldDidFinishEditing(TextField * textField, const char * text) {
-  AppsContainer * appsContainer = ((TextFieldDelegateApp *)app())->container();
-  Context * globalContext = appsContainer->globalContext();
-  float floatBody = Expression::parse(text)->approximate(*globalContext);
-  float parameter = m_store->yValueForXValue(floatBody);
-  if (!m_xPrediction) {
-    parameter = m_store->xValueForYValue(floatBody);
-  }
-  if (isnan(parameter)) {
-    app()->displayWarning(I18n::Message::ValueNotReachedByRegression);
-    return false;
-  }
-  return FloatParameterController::textFieldDidFinishEditing(textField, text);
-}
-
-void GoToParameterController::viewWillAppear() {
-  m_previousParameter = parameterAtIndex(0);
-}
-
-void GoToParameterController::buttonAction() {
-  m_store->centerAxisAround(CurveViewRange::Axis::X, m_cursor->x());
-  m_store->centerAxisAround(CurveViewRange::Axis::Y, m_cursor->y());
-  StackViewController * stack = (StackViewController *)parentResponder();
-  stack->pop();
-  stack->pop();
-}
-
 }
diff --git a/apps/regression/go_to_parameter_controller.h b/apps/regression/go_to_parameter_controller.h
index 42138f06b..6e20bcbb6 100644
--- a/apps/regression/go_to_parameter_controller.h
+++ b/apps/regression/go_to_parameter_controller.h
@@ -2,34 +2,21 @@
 #define REGRESSION_GO_TO_PARAMETER_CONTROLLER_H
 
 #include <escher.h>
-#include "../shared/float_parameter_controller.h"
-#include "../shared/curve_view_cursor.h"
+#include "../shared/go_to_parameter_controller.h"
 #include "store.h"
 
 namespace Regression {
 
-class GoToParameterController : public Shared::FloatParameterController {
+class GoToParameterController : public Shared::GoToParameterController {
 public:
   GoToParameterController(Responder * parentResponder, Store * store, Shared::CurveViewCursor * cursor);
   void setXPrediction(bool xPrediction);
   const char * title() override;
-  int numberOfRows() override;
   void willDisplayCellForIndex(HighlightCell * cell, int index) override;
-  bool textFieldDidFinishEditing(TextField * textField, const char * text) override;
-  void viewWillAppear() override;
 private:
-  constexpr static float k_maxDisplayableFloat = 1E8f;
-  HighlightCell * reusableParameterCell(int index, int type) override;
-  int reusableParameterCellCount(int type) override;
-  float previousParameterAtIndex(int index) override;
   float parameterAtIndex(int index) override;
   bool setParameterAtIndex(int parameterIndex, float f) override;
-  void buttonAction() override;
-  char m_draftTextBuffer[MessageTableCellWithEditableText::k_bufferLength];
-  MessageTableCellWithEditableText m_abscisseCell;
-  float m_previousParameter;
   Store * m_store;
-  Shared::CurveViewCursor * m_cursor;
   bool m_xPrediction;
 };
 
diff --git a/apps/shared/Makefile b/apps/shared/Makefile
index 9b0423dd8..88ac41cc6 100644
--- a/apps/shared/Makefile
+++ b/apps/shared/Makefile
@@ -10,6 +10,7 @@ app_objs += $(addprefix apps/shared/,\
   float_parameter_controller.o\
   function.o\
   function_curve_parameter_controller.o\
+  function_go_to_parameter_controller.o\
   function_graph_view.o\
   function_graph_controller.o\
   function_store.o\
diff --git a/apps/shared/float_parameter_controller.h b/apps/shared/float_parameter_controller.h
index 25f2e4139..414f8765f 100644
--- a/apps/shared/float_parameter_controller.h
+++ b/apps/shared/float_parameter_controller.h
@@ -30,6 +30,7 @@ public:
 protected:
   int activeCell();
   StackViewController * stackController();
+  virtual float parameterAtIndex(int index) = 0;
   SelectableTableView m_selectableTableView;
 private:
   constexpr static int k_buttonMargin = 6;
@@ -38,7 +39,6 @@ private:
   virtual HighlightCell * reusableParameterCell(int index, int type) = 0;
   TextFieldDelegateApp * textFieldDelegateApp() override;
   virtual float previousParameterAtIndex(int index) = 0;
-  virtual float parameterAtIndex(int index) = 0;
   virtual bool setParameterAtIndex(int parameterIndex, float f) = 0;
   ButtonWithSeparator m_okButton;
 };
diff --git a/apps/shared/function_curve_parameter_controller.cpp b/apps/shared/function_curve_parameter_controller.cpp
index c64b4fdc6..a66a17b5f 100644
--- a/apps/shared/function_curve_parameter_controller.cpp
+++ b/apps/shared/function_curve_parameter_controller.cpp
@@ -8,7 +8,7 @@ FunctionCurveParameterController::FunctionCurveParameterController(InteractiveCu
   m_goToCell(MessageTableCellWithChevron(I18n::Message::Goto)),
   m_selectableTableView(SelectableTableView(this, this, 0, 1, Metric::CommonTopMargin, Metric::CommonRightMargin,
     Metric::CommonBottomMargin, Metric::CommonLeftMargin)),
-  m_goToParameterController(GoToParameterController(this, graphRange, cursor, symbol)),
+  m_goToParameterController(FunctionGoToParameterController(this, graphRange, cursor, symbol)),
   m_function(nullptr)
 {
 }
diff --git a/apps/shared/function_curve_parameter_controller.h b/apps/shared/function_curve_parameter_controller.h
index 3c9318cf2..587bfbd15 100644
--- a/apps/shared/function_curve_parameter_controller.h
+++ b/apps/shared/function_curve_parameter_controller.h
@@ -2,7 +2,7 @@
 #define SHARED_FUNCTION_CURVE_PARAMETER_CONTROLLER_H
 
 #include <escher.h>
-#include "go_to_parameter_controller.h"
+#include "function_go_to_parameter_controller.h"
 #include "function.h"
 #include "curve_view_cursor.h"
 #include "interactive_curve_view_range.h"
@@ -21,7 +21,7 @@ protected:
   MessageTableCellWithChevron m_goToCell;
   SelectableTableView m_selectableTableView;
 private:
-  GoToParameterController m_goToParameterController;
+  FunctionGoToParameterController m_goToParameterController;
   Function * m_function;
 };
 
diff --git a/apps/shared/function_go_to_parameter_controller.cpp b/apps/shared/function_go_to_parameter_controller.cpp
new file mode 100644
index 000000000..ca00a7cc7
--- /dev/null
+++ b/apps/shared/function_go_to_parameter_controller.cpp
@@ -0,0 +1,44 @@
+#include "function_go_to_parameter_controller.h"
+#include "text_field_delegate_app.h"
+#include <assert.h>
+
+using namespace Poincare;
+
+namespace Shared {
+
+FunctionGoToParameterController::FunctionGoToParameterController(Responder * parentResponder, InteractiveCurveViewRange * graphRange, CurveViewCursor * cursor, I18n::Message symbol) :
+  GoToParameterController(parentResponder, graphRange, cursor, symbol),
+  m_function(nullptr)
+{
+}
+
+const char * FunctionGoToParameterController::title() {
+  return I18n::translate(I18n::Message::Goto);
+}
+
+float FunctionGoToParameterController::parameterAtIndex(int index) {
+  assert(index == 0);
+  return m_cursor->x();
+}
+
+bool FunctionGoToParameterController::setParameterAtIndex(int parameterIndex, float f) {
+  assert(parameterIndex == 0);
+  TextFieldDelegateApp * myApp = (TextFieldDelegateApp *)app();
+  float y = m_function->evaluateAtAbscissa(f, myApp->localContext());
+  if (fabsf(f) > k_maxDisplayableFloat || fabsf(y) > k_maxDisplayableFloat) {
+    app()->displayWarning(I18n::Message::ForbiddenValue);
+    return false;
+  }
+  if (isnan(y) || isinf(y)) {
+    app()->displayWarning(I18n::Message::ValueNotReachedByFunction);
+    return false;
+  }
+  m_cursor->moveTo(f, y);
+  return true;
+}
+
+void FunctionGoToParameterController::setFunction(Function * function) {
+  m_function = function;
+}
+
+}
diff --git a/apps/shared/function_go_to_parameter_controller.h b/apps/shared/function_go_to_parameter_controller.h
new file mode 100644
index 000000000..4d9af0bea
--- /dev/null
+++ b/apps/shared/function_go_to_parameter_controller.h
@@ -0,0 +1,22 @@
+#ifndef SHARED_FUNCTION_GO_TO_PARAMETER_CONTROLLER_H
+#define SHARED_FUNCTION_GO_TO_PARAMETER_CONTROLLER_H
+
+#include "go_to_parameter_controller.h"
+#include "function.h"
+
+namespace Shared {
+
+class FunctionGoToParameterController : public GoToParameterController {
+public:
+  FunctionGoToParameterController(Responder * parentResponder, InteractiveCurveViewRange * graphRange, CurveViewCursor * cursor, I18n::Message symbol);
+  const char * title() override;
+  void setFunction(Function * function);
+private:
+  float parameterAtIndex(int index) override;
+  bool setParameterAtIndex(int parameterIndex, float f) override;
+  Function * m_function;
+};
+
+}
+
+#endif
diff --git a/apps/shared/go_to_parameter_controller.cpp b/apps/shared/go_to_parameter_controller.cpp
index 760d4195a..b6183e986 100644
--- a/apps/shared/go_to_parameter_controller.cpp
+++ b/apps/shared/go_to_parameter_controller.cpp
@@ -6,17 +6,12 @@ namespace Shared {
 
 GoToParameterController::GoToParameterController(Responder * parentResponder, InteractiveCurveViewRange * graphRange, CurveViewCursor * cursor, I18n::Message symbol) :
   FloatParameterController(parentResponder),
-  m_abscisseCell(MessageTableCellWithEditableText(&m_selectableTableView, this, m_draftTextBuffer, symbol)),
-  m_graphRange(graphRange),
   m_cursor(cursor),
-  m_function(nullptr)
+  m_abscisseCell(MessageTableCellWithEditableText(&m_selectableTableView, this, m_draftTextBuffer, symbol)),
+  m_graphRange(graphRange)
 {
 }
 
-const char * GoToParameterController::title() {
-  return I18n::translate(I18n::Message::Goto);
-}
-
 void GoToParameterController::viewWillAppear() {
   m_previousParameter = parameterAtIndex(0);
   FloatParameterController::viewWillAppear();
@@ -31,23 +26,6 @@ float GoToParameterController::previousParameterAtIndex(int index) {
   return m_previousParameter;
 }
 
-float GoToParameterController::parameterAtIndex(int index) {
-  assert(index == 0);
-  return m_cursor->x();
-}
-
-bool GoToParameterController::setParameterAtIndex(int parameterIndex, float f) {
-  assert(parameterIndex == 0);
-  TextFieldDelegateApp * myApp = (TextFieldDelegateApp *)app();
-  float y = m_function->evaluateAtAbscissa(f, myApp->localContext());
-  if (fabsf(f) > k_maxDisplayableFloat || fabsf(y) > k_maxDisplayableFloat) {
-    app()->displayWarning(I18n::Message::ForbiddenValue);
-    return false;
-  }
-  m_cursor->moveTo(f, y);
-  return true;
-}
-
 HighlightCell * GoToParameterController::reusableParameterCell(int index, int type) {
   assert(index == 0);
   return &m_abscisseCell;
@@ -57,10 +35,6 @@ int GoToParameterController::reusableParameterCellCount(int type) {
   return 1;
 }
 
-void GoToParameterController::setFunction(Function * function) {
-  m_function = function;
-}
-
 void GoToParameterController::buttonAction() {
   m_graphRange->centerAxisAround(CurveViewRange::Axis::X, m_cursor->x());
   m_graphRange->centerAxisAround(CurveViewRange::Axis::Y, m_cursor->y());
diff --git a/apps/shared/go_to_parameter_controller.h b/apps/shared/go_to_parameter_controller.h
index 209e85390..3f9bc937e 100644
--- a/apps/shared/go_to_parameter_controller.h
+++ b/apps/shared/go_to_parameter_controller.h
@@ -5,31 +5,26 @@
 #include "float_parameter_controller.h"
 #include "curve_view_cursor.h"
 #include "interactive_curve_view_range.h"
-#include "function.h"
 
 namespace Shared {
 
 class GoToParameterController : public FloatParameterController {
 public:
   GoToParameterController(Responder * parentResponder, InteractiveCurveViewRange * graphRange, CurveViewCursor * cursor, I18n::Message symbol);
-  const char * title() override;
   void viewWillAppear() override;
-  void setFunction(Function * function);
   int numberOfRows() override;
-private:
+protected:
   constexpr static float k_maxDisplayableFloat = 1E8f;
+  CurveViewCursor * m_cursor;
+private:
   void buttonAction() override;
   HighlightCell * reusableParameterCell(int index, int type) override;
   int reusableParameterCellCount(int type) override;
   float previousParameterAtIndex(int index) override;
-  float parameterAtIndex(int index) override;
-  bool setParameterAtIndex(int parameterIndex, float f) override;
   char m_draftTextBuffer[MessageTableCellWithEditableText::k_bufferLength];
   MessageTableCellWithEditableText m_abscisseCell;
   float m_previousParameter;
   InteractiveCurveViewRange * m_graphRange;
-  CurveViewCursor * m_cursor;
-  Function * m_function;
 };
 
 }