diff --git a/secure/simul_efun/livings.c b/secure/simul_efun/livings.c
index 6d9e5cd..a734c25 100644
--- a/secure/simul_efun/livings.c
+++ b/secure/simul_efun/livings.c
@@ -40,7 +40,7 @@
   // unveraendert zurueckgeben.
   int creation = master()->query_userlist(uid, USER_CREATION_DATE);
 
-  if (creation)
+  if (!creation)
     return uid;
 
   // Username + "_" + CreationDate