--- libunique-1.1.6/unique/uniqueapp.c	2009-11-01 19:33:13.000000000 +0100
+++ libunique-1.1.6/unique/uniqueapp.c	2017-06-15 17:30:10.775354836 +0200
@@ -176,7 +176,7 @@
 {
   gchar *id;
 
-  if (startup_id && startup_id != '\0')
+  if (startup_id && *startup_id != '\0')
     id = g_strdup (startup_id);
   else
     {