diff --git a/fb/fboverlay.c b/fb/fboverlay.c
index 79e02bfe1..fc027f10f 100644
--- a/fb/fboverlay.c
+++ b/fb/fboverlay.c
@@ -186,7 +186,7 @@ fbOverlayUpdateLayerRegion(ScreenPtr pScreen, int layer, RegionPtr prgn)
 /*
  * Copy only areas in each layer containing real bits
  */
-void
+static void
 fbOverlayCopyWindow(WindowPtr pWin, DDXPointRec ptOldOrg, RegionPtr prgnSrc)
 {
     ScreenPtr pScreen = pWin->drawable.pScreen;
diff --git a/fb/fboverlay.h b/fb/fboverlay.h
index 9ab04d678..bf8792137 100644
--- a/fb/fboverlay.h
+++ b/fb/fboverlay.h
@@ -60,9 +60,6 @@ typedef struct _fbOverlayScrPriv {
 #define fbOverlayGetScrPriv(s) \
     dixLookupPrivate(&(s)->devPrivates, fbOverlayGetScreenPrivateKey())
 
-extern _X_EXPORT void
- fbOverlayCopyWindow(WindowPtr pWin, DDXPointRec ptOldOrg, RegionPtr prgnSrc);
-
 extern _X_EXPORT void
 fbOverlayWindowExposures(WindowPtr pWin, RegionPtr prgn);
 
diff --git a/fb/wfbrename.h b/fb/wfbrename.h
index fa04c071c..4808e1819 100644
--- a/fb/wfbrename.h
+++ b/fb/wfbrename.h
@@ -67,7 +67,6 @@
 #define FbMergeRopBits wFbMergeRopBits
 #define fbOddTile wfbOddTile
 #define fbOver wfbOver
-#define fbOverlayCopyWindow wfbOverlayCopyWindow
 #define fbOverlayFinishScreenInit wfbOverlayFinishScreenInit
 #define fbOverlayGeneration wfbOverlayGeneration
 #define fbOverlayGetScreenPrivateKey wfbOverlayGetScreenPrivateKey