diff --git a/Source/Editor/Surface/VisjectSurface.Input.cs b/Source/Editor/Surface/VisjectSurface.Input.cs
index d6820614f..2e48ccb3c 100644
--- a/Source/Editor/Surface/VisjectSurface.Input.cs
+++ b/Source/Editor/Surface/VisjectSurface.Input.cs
@@ -278,7 +278,7 @@ namespace FlaxEditor.Surface
             if (!handled && CanEdit)
             {
                 var mousePos = _rootControl.PointFromParent(ref _mousePos);
-                if (IntersectsConnection(mousePos, out InputBox inputBox, out OutputBox outputBox))
+                if (IntersectsConnection(mousePos, out InputBox inputBox, out OutputBox outputBox) && GetControlUnderMouse() == null)
                 {
                     if (Undo != null)
                     {