diff --git a/src/plugins/wp/tests/wp_plugin/dynamic.i b/src/plugins/wp/tests/wp_plugin/dynamic.i
index 3f9e7b87a8b42a5242bb74060cd129586b61042a..ccde8d32cf69e67cc1595503336e8a461d1b98aa 100644
--- a/src/plugins/wp/tests/wp_plugin/dynamic.i
+++ b/src/plugins/wp/tests/wp_plugin/dynamic.i
@@ -61,7 +61,7 @@ int h0(void);
   @   assigns X1;
   @   ensures X1==1; */
 int behavior (int (*p)(void)) {
-  //@ calls h1, h2;
+  //@ calls h1, h2; // Shall not be proved in default behavior (known bug)
   return (*p)();
 }