diff --git a/lib/krb5/config_file.c b/lib/krb5/config_file.c
index 2938f89fe..c1963274a 100644
--- a/lib/krb5/config_file.c
+++ b/lib/krb5/config_file.c
@@ -393,6 +393,7 @@ _krb5_config_copy(krb5_context context,
 	previous = &(*d)->next;
 	c = c->next;
     }
+    return 0;
 }