diff --git a/src/cairo-xcb-surface-render.c b/src/cairo-xcb-surface-render.c
index 7258c59db..e98148a68 100644
--- a/src/cairo-xcb-surface-render.c
+++ b/src/cairo-xcb-surface-render.c
@@ -2331,7 +2331,7 @@ _cairo_xcb_surface_fixup_unbounded_boxes (cairo_xcb_surface_t *dst,
 	status = _render_fill_boxes (dst,
 				     CAIRO_OPERATOR_CLEAR,
 				     CAIRO_COLOR_TRANSPARENT,
-				     boxes);
+				     &clear);
     }
 
     _cairo_boxes_fini (&clear);