diff --git a/src/gui/kernel/qwindowsysteminterface_p.h b/src/gui/kernel/qwindowsysteminterface_p.h
index 1520ac4a3f..a2927cbc02 100644
--- a/src/gui/kernel/qwindowsysteminterface_p.h
+++ b/src/gui/kernel/qwindowsysteminterface_p.h
@@ -76,7 +76,6 @@ public:
         ActivatedWindow = 0x05,
         WindowStateChanged = 0x06,
         Mouse = UserInputEvent | 0x07,
-        FrameStrutMouse = UserInputEvent | 0x08,  // ### Qt6 remove
         Wheel = UserInputEvent | 0x09,
         Key = UserInputEvent | 0x0a,
         Touch = UserInputEvent | 0x0b,