diff --git a/intern/ghost/intern/GHOST_SystemWin32.cpp b/intern/ghost/intern/GHOST_SystemWin32.cpp
index ec6d0d355b5..835f7da3038 100644
--- a/intern/ghost/intern/GHOST_SystemWin32.cpp
+++ b/intern/ghost/intern/GHOST_SystemWin32.cpp
@@ -54,7 +54,7 @@
 #define WM_MOUSEWHEEL 0x020A
 #endif // WM_MOUSEWHEEL
 #ifndef WHEEL_DELTA
-#define WHEEL_DELTA 120	/* Value for rolling one detent */
+#define WHEEL_DELTA 120	/* Value for rolling one detent, (old convention! MS changed it) */
 #endif // WHEEL_DELTA
 
 
@@ -479,7 +479,11 @@ GHOST_EventWheel* GHOST_SystemWin32::processWheelEvent(GHOST_IWindow *window, WP
 {
 	// short fwKeys = LOWORD(wParam);			// key flags
 	int zDelta = (short) HIWORD(wParam);	// wheel rotation
-	zDelta /= WHEEL_DELTA;
+	
+	// zDelta /= WHEEL_DELTA;
+	// temporary fix below: microsoft now has added more precision, making the above division not work
+	if (zDelta <= 0 ) zDelta= -1; else zDelta= 1;	
+	
 	// short xPos = (short) LOWORD(lParam);	// horizontal position of pointer
 	// short yPos = (short) HIWORD(lParam);	// vertical position of pointer
 	return new GHOST_EventWheel (getSystem()->getMilliSeconds(), window, zDelta);