diff --git a/trunk/vpalias.c b/trunk/vpalias.c
index 9853f14..e9bd81f 100644
--- a/vpalias.c
+++ b/vpalias.c
@@ -369,7 +369,7 @@ char *valias_select_names( char *domain )
         }
       }
     }
-    if (num_names < max_names) {
+    if (num_names < max_names && num_names > 0) {
       new_names = realloc( names, num_names * sizeof(char *) );
       if (new_names != NULL)
 	names = new_names;