diff --git a/src/fs/gnunet-service-fs.c b/src/fs/gnunet-service-fs.c
index 597e89e..aaade99 100644
--- a/src/fs/gnunet-service-fs.c
+++ b/src/fs/gnunet-service-fs.c
@@ -1234,7 +1234,8 @@ peer_init_handler (void *cls,
                           my_identity))
   {
     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-                "Peer identity mismatch, refusing to start!\n");
+                "Peer identity mismatch, refusing to start! Core delivered %s.\n",
+                GNUNET_i2s (my_identity));
     GNUNET_SCHEDULER_shutdown ();
   }
 }