diff --git a/glamor/glamor_copy.c b/glamor/glamor_copy.c
index 028acf239..1adfba0e6 100644
--- a/glamor/glamor_copy.c
+++ b/glamor/glamor_copy.c
@@ -640,6 +640,9 @@ glamor_copy(DrawablePtr src,
             Pixel bitplane,
             void *closure)
 {
+    if (nbox == 0)
+	return;
+
     if (glamor_copy_gl(src, dst, gc, box, nbox, dx, dy, reverse, upsidedown, bitplane, closure))
         return;
     glamor_copy_bail(src, dst, gc, box, nbox, dx, dy, reverse, upsidedown, bitplane, closure);