diff --git a/rect.c b/rect.c
index 9b7816c..7fff9af 100644
--- a/rect.c
+++ b/rect.c
@@ -1357,6 +1357,7 @@ void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
         sfree(vedge);
    }
 
+    sfree(corners);
     sfree(correct);
 }