--- file_not_specified_in_diff	
+++ file_not_specified_in_diff	
@@ -, +, @@ 
---
--- a/src/mouse.c
+++ b/src/mouse.c
@@ -1740,10 +1740,10 @@ MouseProc(DeviceIntPtr device, int what)
                                 );
 
 	/* X valuator */
-	xf86InitValuatorAxisStruct(device, 0, 0, -1, 1, 0, 1);
+	xf86InitValuatorAxisStruct(device, 0, -1, -1, 1, 0, 1);
 	xf86InitValuatorDefaults(device, 0);
 	/* Y valuator */
-	xf86InitValuatorAxisStruct(device, 1, 0, -1, 1, 0, 1);
+	xf86InitValuatorAxisStruct(device, 1, -1, -1, 1, 0, 1);
 	xf86InitValuatorDefaults(device, 1);
 #if GET_ABI_MAJOR(ABI_XINPUT_VERSION) == 0
 	xf86MotionHistoryAllocate(pInfo);