diff --git a/Gems/Atom/Tools/MaterialEditor/Code/Source/Viewport/InputController/Behavior.cpp b/Gems/Atom/Tools/MaterialEditor/Code/Source/Viewport/InputController/Behavior.cpp
index 5a671d53ef..877a3affb1 100644
--- a/Gems/Atom/Tools/MaterialEditor/Code/Source/Viewport/InputController/Behavior.cpp
+++ b/Gems/Atom/Tools/MaterialEditor/Code/Source/Viewport/InputController/Behavior.cpp
@@ -121,6 +121,7 @@ namespace MaterialEditor
 
     float Behavior::GetSensitivityZ()
     {
+        // adjust zooming sensitivity by model size, so that large models zoom at the same speed as smaller ones
         return 0.001f * AZ::GetMax(0.5f, m_radius);
     }