diff --git a/dix/events.c b/dix/events.c
index 45d9eabea..ff6e008ec 100644
--- a/dix/events.c
+++ b/dix/events.c
@@ -439,7 +439,7 @@ GetWindowXI2Mask(DeviceIntPtr dev, WindowPtr win, xEvent* ev)
             (inputMasks->xi2mask[XIAllMasterDevices][evtype/8] && IsMaster(dev)));
 }
 
-static Mask
+Mask
 GetEventMask(DeviceIntPtr dev, xEvent *event, InputClients* other)
 {
     /* XI2 filters are only ever 8 bit, so let's return a 8 bit mask */
diff --git a/include/input.h b/include/input.h
index c1db5444f..56992d134 100644
--- a/include/input.h
+++ b/include/input.h
@@ -526,6 +526,7 @@ extern _X_EXPORT InputAttributes *DuplicateInputAttributes(InputAttributes *attr
 extern _X_EXPORT void FreeInputAttributes(InputAttributes *attrs);
 
 /* misc event helpers */
+extern Mask GetEventMask(DeviceIntPtr dev, xEvent* ev, InputClientsPtr clients);
 extern Mask GetEventFilter(DeviceIntPtr dev, xEvent *event);
 extern Mask GetWindowXI2Mask(DeviceIntPtr dev, WindowPtr win, xEvent* ev);
 void FixUpEventFromWindow(SpritePtr pSprite,