diff --git a/src/cairo-glitz-surface.c b/src/cairo-glitz-surface.c
index c000917..002ce68 100644
--- a/src/cairo-glitz-surface.c
+++ b/src/cairo-glitz-surface.c
@@ -1182,6 +1182,8 @@ _cairo_glitz_surface_composite_trapezoid
 	}
 
 	_cairo_glitz_surface_set_image (mask, image, 0, 0);
+
+	cairo_surface_destroy (&image->base);
     }
 
     _cairo_glitz_surface_set_attributes (src, &attributes);