diff --git a/Xext/mbuf.c b/Xext/mbuf.c
index 81b704f2f..827603204 100644
--- a/Xext/mbuf.c
+++ b/Xext/mbuf.c
@@ -1106,6 +1106,32 @@ SClobberNotifyEvent (from, to)
     to->state = from->state;
 }
 
+RegionPtr
+CreateUnclippedWinSize (WindowPtr pWin)
+{
+    RegionPtr	pRgn;
+    BoxRec	box;
+
+    box.x1 = pWin->drawable.x;
+    box.y1 = pWin->drawable.y;
+    box.x2 = pWin->drawable.x + (int) pWin->drawable.width;
+    box.y2 = pWin->drawable.y + (int) pWin->drawable.height;
+    pRgn = REGION_CREATE(pWin->drawable.pScreen, &box, 1);
+    if (wBoundingShape (pWin) || wClipShape (pWin)) {
+	ScreenPtr pScreen;
+        pScreen = pWin->drawable.pScreen;
+
+	REGION_TRANSLATE(pScreen, pRgn, - pWin->drawable.x,
+			 - pWin->drawable.y);
+	if (wBoundingShape (pWin))
+	    REGION_INTERSECT(pScreen, pRgn, pRgn, wBoundingShape (pWin));
+	if (wClipShape (pWin))
+	    REGION_INTERSECT(pScreen, pRgn, pRgn, wClipShape (pWin));
+	REGION_TRANSLATE(pScreen, pRgn, pWin->drawable.x, pWin->drawable.y);
+    }
+    return pRgn;
+}
+
 static void
 PerformDisplayRequest (ppMultibuffers, pMultibuffer, nbuf)
     MultibufferPtr	    *pMultibuffer;
diff --git a/dix/window.c b/dix/window.c
index d750b3baa..92c5eff44 100644
--- a/dix/window.c
+++ b/dix/window.c
@@ -1588,32 +1588,6 @@ MoveWindowInStack(WindowPtr pWin, WindowPtr pNextSib)
     return( pFirstChange );
 }
 
-RegionPtr
-CreateUnclippedWinSize (WindowPtr pWin)
-{
-    RegionPtr	pRgn;
-    BoxRec	box;
-
-    box.x1 = pWin->drawable.x;
-    box.y1 = pWin->drawable.y;
-    box.x2 = pWin->drawable.x + (int) pWin->drawable.width;
-    box.y2 = pWin->drawable.y + (int) pWin->drawable.height;
-    pRgn = REGION_CREATE(pWin->drawable.pScreen, &box, 1);
-    if (wBoundingShape (pWin) || wClipShape (pWin)) {
-	ScreenPtr pScreen;
-        pScreen = pWin->drawable.pScreen;
-
-	REGION_TRANSLATE(pScreen, pRgn, - pWin->drawable.x,
-			 - pWin->drawable.y);
-	if (wBoundingShape (pWin))
-	    REGION_INTERSECT(pScreen, pRgn, pRgn, wBoundingShape (pWin));
-	if (wClipShape (pWin))
-	    REGION_INTERSECT(pScreen, pRgn, pRgn, wClipShape (pWin));
-	REGION_TRANSLATE(pScreen, pRgn, pWin->drawable.x, pWin->drawable.y);
-    }
-    return pRgn;
-}
-
 void
 SetWinSize (WindowPtr pWin)
 {
diff --git a/include/window.h b/include/window.h
index 4353adf33..8c25799f5 100644
--- a/include/window.h
+++ b/include/window.h
@@ -156,8 +156,7 @@ extern _X_EXPORT void GetWindowAttributes(
     ClientPtr /*client*/,
     xGetWindowAttributesReply* /* wa */);
 
-extern _X_EXPORT RegionPtr CreateUnclippedWinSize(
-    WindowPtr /*pWin*/);
+extern RegionPtr CreateUnclippedWinSize(WindowPtr);
 
 extern _X_EXPORT void GravityTranslate(
     int /*x*/,