diff --git a/progs/demos/ipers.c b/progs/demos/ipers.c
index 5d82b0dc924..ed03673cb62 100644
--- a/progs/demos/ipers.c
+++ b/progs/demos/ipers.c
@@ -133,6 +133,8 @@ initdlists(void)
 
       glEndList();
    }
+
+   gluDeleteQuadric(obj);
 }
 
 static void