diff --git a/src/i830_accel.c b/src/i830_accel.c
index b365e3f..303afd1 100644
--- a/src/i830_accel.c
+++ b/src/i830_accel.c
@@ -56,6 +56,9 @@ intel_get_pixmap_offset(PixmapPtr pPix)
     ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
     I830Ptr pI830 = I830PTR(pScrn);
 
+    if (pixmap_is_scanout(pPix))
+	return pScrn->fbOffset;
+
     return (unsigned long)pPix->devPrivate.ptr - (unsigned long)pI830->FbBase;
 }