diff --git a/secure/simul_efun/simul_efun.c b/secure/simul_efun/simul_efun.c
index 658d5f8..d574bde 100644
--- a/secure/simul_efun/simul_efun.c
+++ b/secure/simul_efun/simul_efun.c
@@ -807,6 +807,7 @@
   // ist, dann koennen wir jetzt mit mkdir das tiefste Verzeichnis anlegen
   if (mkdirp(dir[0..strrstr(dir,"/")-1]) == 1)
     return funcall(bind_lambda(#'efun::mkdir, previous_object()), dir);
+  return 0;
 }
 
 
diff --git a/secure/simul_efun/spare/simul_efun.c b/secure/simul_efun/spare/simul_efun.c
index 658d5f8..d574bde 100644
--- a/secure/simul_efun/spare/simul_efun.c
+++ b/secure/simul_efun/spare/simul_efun.c
@@ -807,6 +807,7 @@
   // ist, dann koennen wir jetzt mit mkdir das tiefste Verzeichnis anlegen
   if (mkdirp(dir[0..strrstr(dir,"/")-1]) == 1)
     return funcall(bind_lambda(#'efun::mkdir, previous_object()), dir);
+  return 0;
 }