diff --git a/mi/mi.h b/mi/mi.h
index 710d9f790..c5f3063c2 100644
--- a/mi/mi.h
+++ b/mi/mi.h
@@ -280,9 +280,6 @@ extern _X_EXPORT void miPolylines(DrawablePtr pDrawable,
 
 /* miwindow.c */
 
-extern _X_EXPORT WindowPtr miGetLayerWindow(WindowPtr   /*pWin */
-    );
-
 extern _X_EXPORT void miSetShape(WindowPtr /*pWin */ ,
                                  int    /*kind */
     );
diff --git a/mi/mi_priv.h b/mi/mi_priv.h
index 20ad1a532..f41afd25b 100644
--- a/mi/mi_priv.h
+++ b/mi/mi_priv.h
@@ -63,5 +63,6 @@ void miHandleValidateExposures(WindowPtr pWin);
 void miMoveWindow(WindowPtr pWin, int x, int y, WindowPtr pNextSib, VTKind kind);
 void miResizeWindow(WindowPtr pWin, int x, int y, unsigned int w,
                     unsigned int h, WindowPtr pSib);
+WindowPtr miGetLayerWindow(WindowPtr pWin);
 
 #endif /* _XSERVER_MI_PRIV_H */