diff --git a/apps/graph/graph/graph_controller_helper.cpp b/apps/graph/graph/graph_controller_helper.cpp
index 6d276e3d4..ecfc78f18 100644
--- a/apps/graph/graph/graph_controller_helper.cpp
+++ b/apps/graph/graph/graph_controller_helper.cpp
@@ -9,9 +9,6 @@ using namespace Poincare;
 
 namespace Graph {
 
-static inline float minFloat(float x, float y) { return x < y ? x : y; }
-static inline float maxFloat(float x, float y) { return x > y ? x : y; }
-
 bool GraphControllerHelper::privateMoveCursorHorizontally(Shared::CurveViewCursor * cursor, int direction, Shared::InteractiveCurveViewRange * range, int numberOfStepsInGradUnit, Ion::Storage::Record record) {
   ExpiringPointer<CartesianFunction> function = App::app()->functionStore()->modelForRecord(record);
   double tCursorPosition = cursor->t();
@@ -20,18 +17,12 @@ bool GraphControllerHelper::privateMoveCursorHorizontally(Shared::CurveViewCurso
   double tMax = function->tMax();
   double dir = (direction > 0 ? 1.0 : -1.0);
   CartesianFunction::PlotType type = function->plotType();
-  if ((dir > 0 && t >= tMax) || (dir < 0 && t <= tMin)) {
-    // Stay inside the definition domain
-    assert((t == tMax) || (t == tMin));
-    return true;
-  }
   if (type == CartesianFunction::PlotType::Cartesian) {
     t+= dir * range->xGridUnit()/numberOfStepsInGradUnit;
   } else {
     assert(type == CartesianFunction::PlotType::Polar || type == CartesianFunction::PlotType::Parametric);
     t += dir * (tMax-tMin)/k_definitionDomainDivisor;
   }
-  t = maxFloat(minFloat(t, tMax), tMin); // Stay inside the definition domain
   Coordinate2D<double> xy = function->evaluateXYAtParameter(t, App::app()->localContext());
   cursor->moveTo(t, xy.x1(), xy.x2());
   return true;