diff --git a/mi/mi.h b/mi/mi.h
index d0c50a35d..10432a71a 100644
--- a/mi/mi.h
+++ b/mi/mi.h
@@ -156,6 +156,11 @@ extern _X_EXPORT void mieqAddCallbackOnDrained(CallbackProcPtr callback,
 extern _X_EXPORT void mieqRemoveCallbackOnDrained(CallbackProcPtr callback,
                                                   void *param);
 
+extern DeviceIntPtr CopyGetMasterEvent(DeviceIntPtr /* sdev */ ,
+                                       InternalEvent * /* original */ ,
+                                       InternalEvent *  /* copy */
+    );
+
 /**
  * Custom input event handler. If you need to process input events in some
  * other way than the default path, register an input event handler for the
diff --git a/mi/mieq.c b/mi/mieq.c
index c4018335c..caf360dcf 100644
--- a/mi/mieq.c
+++ b/mi/mieq.c
@@ -384,7 +384,7 @@ FixUpEventForMaster(DeviceIntPtr mdev, DeviceIntPtr sdev,
  * @param copy The event after being copied
  * @return The master device or NULL if the device is a floating slave.
  */
-static DeviceIntPtr
+DeviceIntPtr
 CopyGetMasterEvent(DeviceIntPtr sdev,
                    InternalEvent *original, InternalEvent *copy)
 {