diff --git a/apps/curve_view.cpp b/apps/curve_view.cpp
index 76ada169e..4f4ca29a2 100644
--- a/apps/curve_view.cpp
+++ b/apps/curve_view.cpp
@@ -131,13 +131,14 @@ const uint8_t stampMask[stampSize+1][stampSize+1] = {
 
 constexpr static int k_maxNumberOfIterations = 10;
 constexpr static int k_resolution = 320.0f;
+constexpr static int k_externRectMargin = 1;
 
 void CurveView::drawCurve(void * curve, KDColor color, KDContext * ctx, KDRect rect, bool colorUnderCurve, float colorLowerBound, float colorUpperBound, bool continuously) const {
   float xMin = min(Axis::Horizontal);
   float xMax = max(Axis::Horizontal);
   float xStep = (xMax-xMin)/k_resolution;
-  float rectMin = pixelToFloat(Axis::Horizontal, rect.left());
-  float rectMax = pixelToFloat(Axis::Horizontal, rect.right());
+  float rectMin = pixelToFloat(Axis::Horizontal, rect.left() - k_externRectMargin);
+  float rectMax = pixelToFloat(Axis::Horizontal, rect.right() + k_externRectMargin);
   for (float x = rectMin; x < rectMax; x += xStep) {
     float y = evaluateCurveAtAbscissa(curve, x);
     float pxf = floatToPixel(Axis::Horizontal, x);