diff --git a/miext/damage/damage.c b/miext/damage/damage.c
index 0ba4f251f..b15b5b31c 100755
--- a/miext/damage/damage.c
+++ b/miext/damage/damage.c
@@ -742,9 +742,13 @@ damageCopyArea(DrawablePtr   pSrc,
     /* The driver will only call SourceValidate() when pSrc != pDst,
      * but the software sprite (misprite.c) always need to know when a
      * drawable is copied so it can remove the sprite. See #1030. */
-    if ((pSrc == pDst) && pSrc->pScreen->SourceValidate)
-        (*pSrc->pScreen->SourceValidate) (pSrc, srcx, srcy, width, height);
-
+    if ((pSrc == pDst) && pSrc->pScreen->SourceValidate &&
+	pSrc->type == DRAWABLE_WINDOW &&
+	((WindowPtr)pSrc)->viewable)
+    {
+	(*pSrc->pScreen->SourceValidate) (pSrc, srcx, srcy, width, height);
+    }
+    
     if (checkGCDamage (pDst, pGC))
     {
 	BoxRec box;