diff --git a/p/service/padreic/mnpc/walk_master.c b/p/service/padreic/mnpc/walk_master.c
index 58aecf3..688c1b7 100644
--- a/p/service/padreic/mnpc/walk_master.c
+++ b/p/service/padreic/mnpc/walk_master.c
@@ -78,7 +78,7 @@
   closure func = walk_closure;
   if (!closurep(func))
   {
-    func=symbol_function("Walk", previous_object());
+    func=symbol_function("CheckWalk", previous_object());
     if (!func)
       raise_error("RegisterWalker() call from Object without Walk() function.\n");
   }