diff --git a/poincare/include/poincare/zoom.h b/poincare/include/poincare/zoom.h
index dae416203..415e83fb6 100644
--- a/poincare/include/poincare/zoom.h
+++ b/poincare/include/poincare/zoom.h
@@ -45,7 +45,7 @@ private:
   static constexpr float k_minimalDistance = 1e-2f;
   static constexpr float k_asymptoteThreshold = 2e-1f;
   static constexpr float k_explosionThreshold = 1e1f;
-  static constexpr float k_stepFactor = 1.1f;
+  static constexpr float k_stepFactor = 1.09f;
   static constexpr float k_breathingRoom = 0.3f;
   static constexpr float k_forceXAxisThreshold = 0.2f;
   static constexpr float k_maxRatioBetweenPointsOfInterest = 100.f;