diff --git a/apps/Makefile b/apps/Makefile
index 3d73f627b..6c2bb1e4e 100644
--- a/apps/Makefile
+++ b/apps/Makefile
@@ -39,7 +39,6 @@ apps_src += $(addprefix apps/,\
   shift_alpha_lock_view.cpp \
   suspend_timer.cpp \
   title_bar_view.cpp \
-  variable_box_empty_controller.cpp \
 )
 
 tests_src += apps/exam_mode_configuration_official.cpp
diff --git a/apps/code/variable_box_empty_controller.cpp b/apps/code/variable_box_empty_controller.cpp
index 28afc0fd5..83bd42471 100644
--- a/apps/code/variable_box_empty_controller.cpp
+++ b/apps/code/variable_box_empty_controller.cpp
@@ -4,7 +4,7 @@
 namespace Code {
 
 VariableBoxEmptyController::VariableBoxEmptyView::VariableBoxEmptyView() :
-  ::VariableBoxEmptyController::VariableBoxEmptyView()
+  ::ModalViewEmptyController::ModalViewEmptyView()
 {
   initMessageViews();
   m_message.setMessage(I18n::Message::NoWordAvailableHere);
diff --git a/apps/code/variable_box_empty_controller.h b/apps/code/variable_box_empty_controller.h
index f29d3a928..d78cea504 100644
--- a/apps/code/variable_box_empty_controller.h
+++ b/apps/code/variable_box_empty_controller.h
@@ -1,20 +1,20 @@
 #ifndef APPS_CODE_VARIABLE_BOX_EMPTY_CONTROLLER_H
 #define APPS_CODE_VARIABLE_BOX_EMPTY_CONTROLLER_H
 
-#include <apps/variable_box_empty_controller.h>
+#include <escher/modal_view_empty_controller.h>
 
 namespace Code {
 
-class VariableBoxEmptyController : public ::VariableBoxEmptyController {
+class VariableBoxEmptyController : public ModalViewEmptyController {
 public:
   VariableBoxEmptyController() :
-    ::VariableBoxEmptyController(),
+    ModalViewEmptyController(),
     m_view()
   {}
   // View Controller
   View * view() override { return &m_view; }
 private:
-  class VariableBoxEmptyView : public ::VariableBoxEmptyController::VariableBoxEmptyView {
+  class VariableBoxEmptyView : public ModalViewEmptyController::ModalViewEmptyView {
   public:
     constexpr static int k_numberOfMessages = 1;
     VariableBoxEmptyView();
diff --git a/apps/math_variable_box_empty_controller.cpp b/apps/math_variable_box_empty_controller.cpp
index f36380d99..f5ad187f7 100644
--- a/apps/math_variable_box_empty_controller.cpp
+++ b/apps/math_variable_box_empty_controller.cpp
@@ -4,7 +4,7 @@
 #include <assert.h>
 
 MathVariableBoxEmptyController::MathVariableBoxEmptyView::MathVariableBoxEmptyView() :
-  VariableBoxEmptyView(),
+  ModalViewEmptyView(),
   m_layoutExample(0.5f, 0.5f, KDColorBlack, Palette::WallScreen)
 {
   initMessageViews();
diff --git a/apps/math_variable_box_empty_controller.h b/apps/math_variable_box_empty_controller.h
index 9083b3bca..120ff42b6 100644
--- a/apps/math_variable_box_empty_controller.h
+++ b/apps/math_variable_box_empty_controller.h
@@ -1,13 +1,13 @@
 #ifndef APPS_MATH_VARIABLE_BOX_EMPTY_CONTROLLER_H
 #define APPS_MATH_VARIABLE_BOX_EMPTY_CONTROLLER_H
 
+#include <escher/modal_view_empty_controller.h>
 #include <poincare/layout.h>
-#include "variable_box_empty_controller.h"
 
-class MathVariableBoxEmptyController : public VariableBoxEmptyController {
+class MathVariableBoxEmptyController : public ModalViewEmptyController {
 public:
   MathVariableBoxEmptyController() :
-    VariableBoxEmptyController(),
+    ModalViewEmptyController(),
     m_view()
   {}
   enum class Type {
@@ -20,7 +20,7 @@ public:
   View * view() override { return &m_view; }
   void viewDidDisappear() override;
 private:
-  class MathVariableBoxEmptyView : public VariableBoxEmptyView {
+  class MathVariableBoxEmptyView : public ModalViewEmptyController::ModalViewEmptyView {
   public:
     constexpr static int k_numberOfMessages = 4;
     MathVariableBoxEmptyView();
diff --git a/escher/Makefile b/escher/Makefile
index f47a998ac..ce108c712 100644
--- a/escher/Makefile
+++ b/escher/Makefile
@@ -47,6 +47,7 @@ escher_src += $(addprefix escher/src/,\
   message_text_view.cpp \
   metric.cpp \
   modal_view_controller.cpp \
+  modal_view_empty_controller.cpp \
   nested_menu_controller.cpp \
   palette.cpp \
   pointer_text_view.cpp \
diff --git a/apps/variable_box_empty_controller.h b/escher/include/escher/modal_view_empty_controller.h
similarity index 74%
rename from apps/variable_box_empty_controller.h
rename to escher/include/escher/modal_view_empty_controller.h
index da1e658b0..cf175aab4 100644
--- a/apps/variable_box_empty_controller.h
+++ b/escher/include/escher/modal_view_empty_controller.h
@@ -1,19 +1,19 @@
-#ifndef APPS_VARIABLE_BOX_EMPTY_CONTROLLER_H
-#define APPS_VARIABLE_BOX_EMPTY_CONTROLLER_H
+#ifndef ESCHER_EMPTY_MODAL_VIEW_EMPTY_CONTROLLER_H
+#define ESCHER_EMPTY_MODAL_VIEW_EMPTY_CONTROLLER_H
 
 #include <escher/bordered.h>
 #include <escher/expression_view.h>
 #include <escher/message_text_view.h>
 #include <escher/view_controller.h>
 
-class VariableBoxEmptyController : public ViewController {
+class ModalViewEmptyController : public ViewController {
 public:
-  VariableBoxEmptyController() : ViewController(nullptr) {}
+  ModalViewEmptyController() : ViewController(nullptr) {}
   void setMessages(I18n::Message * messages);
   // View Controller
   DisplayParameter displayParameter() override { return DisplayParameter::DoNotShowOwnTitle; }
 protected:
-  class VariableBoxEmptyView : public View, public Bordered {
+  class ModalViewEmptyView : public View, public Bordered {
   public:
     constexpr static const KDFont * k_font = KDFont::SmallFont;
     void initMessageViews();
@@ -28,7 +28,7 @@ protected:
     virtual int numberOfMessageTextViews() const = 0;
     virtual MessageTextView * messageTextViewAtIndex(int index) = 0;
     bool hasExpressionView() const {
-      return const_cast<VariableBoxEmptyView *>(this)->expressionView() != nullptr;
+      return const_cast<ModalViewEmptyView *>(this)->expressionView() != nullptr;
     }
     virtual ExpressionView * expressionView() { return nullptr; }
   };
diff --git a/apps/variable_box_empty_controller.cpp b/escher/src/modal_view_empty_controller.cpp
similarity index 71%
rename from apps/variable_box_empty_controller.cpp
rename to escher/src/modal_view_empty_controller.cpp
index a31799c50..3a3d071d6 100644
--- a/apps/variable_box_empty_controller.cpp
+++ b/escher/src/modal_view_empty_controller.cpp
@@ -1,12 +1,11 @@
-#include "variable_box_empty_controller.h"
-#include <poincare/layout_helper.h>
+#include <escher/modal_view_empty_controller.h>
 #include <apps/i18n.h>
 #include <assert.h>
 
-const KDColor VariableBoxEmptyController::VariableBoxEmptyView::k_backgroundColor;
+const KDColor ModalViewEmptyController::ModalViewEmptyView::k_backgroundColor;
 
-// VariableBoxEmptyController::VariableBoxEmptyView
-void VariableBoxEmptyController::VariableBoxEmptyView::initMessageViews() {
+// ModalViewEmptyController::ModalViewEmptyView
+void ModalViewEmptyController::ModalViewEmptyView::initMessageViews() {
   const int numberOfMessageViews = numberOfMessageTextViews();
   for (int i = 0; i < numberOfMessageViews; i++) {
     MessageTextView * message = messageTextViewAtIndex(i);
@@ -22,23 +21,23 @@ void VariableBoxEmptyController::VariableBoxEmptyView::initMessageViews() {
   }
 }
 
-void VariableBoxEmptyController::VariableBoxEmptyView::setMessages(I18n::Message * message) {
+void ModalViewEmptyController::ModalViewEmptyView::setMessages(I18n::Message * message) {
   const int numberOfMessageViews = numberOfMessageTextViews();
   for (int i = 0; i < numberOfMessageViews; i++) {
     messageTextViewAtIndex(i)->setMessage(message[i]);
   }
 }
 
-void VariableBoxEmptyController::VariableBoxEmptyView::drawRect(KDContext * ctx, KDRect rect) const {
+void ModalViewEmptyController::ModalViewEmptyView::drawRect(KDContext * ctx, KDRect rect) const {
   ctx->fillRect(bounds(), k_backgroundColor);
   drawBorderOfRect(ctx, bounds(), Palette::GreyBright);
 }
 
-int VariableBoxEmptyController::VariableBoxEmptyView::numberOfSubviews() const {
+int ModalViewEmptyController::ModalViewEmptyView::numberOfSubviews() const {
   return numberOfMessageTextViews() + hasExpressionView();
 }
 
-View * VariableBoxEmptyController::VariableBoxEmptyView::subviewAtIndex(int index) {
+View * ModalViewEmptyController::ModalViewEmptyView::subviewAtIndex(int index) {
   if (hasExpressionView()) {
     if (index == k_expressionViewRowIndex) {
       return expressionView();
@@ -48,7 +47,7 @@ View * VariableBoxEmptyController::VariableBoxEmptyView::subviewAtIndex(int inde
   return messageTextViewAtIndex(index);
 }
 
-void VariableBoxEmptyController::VariableBoxEmptyView::layoutSubviews(bool force) {
+void ModalViewEmptyController::ModalViewEmptyView::layoutSubviews(bool force) {
   const int numberOfMessageViews = numberOfMessageTextViews();
   const bool hasExpression = hasExpressionView();
   KDCoordinate width = bounds().width() - 2 * k_separatorThickness;
@@ -75,8 +74,8 @@ void VariableBoxEmptyController::VariableBoxEmptyView::layoutSubviews(bool force
   }
 }
 
-// VariableBoxEmptyController
+// ModalViewEmptyController
 
-void VariableBoxEmptyController::setMessages(I18n::Message * messages) {
-  static_cast<VariableBoxEmptyView *>(view())->setMessages(messages);
+void ModalViewEmptyController::setMessages(I18n::Message * messages) {
+  static_cast<ModalViewEmptyView *>(view())->setMessages(messages);
 }