diff --git a/src/auditor/taler-auditor.c b/src/auditor/taler-auditor.c
index 57c82a6b5..0f43f454d 100644
--- a/src/auditor/taler-auditor.c
+++ b/src/auditor/taler-auditor.c
@@ -257,7 +257,8 @@ verify_reserve_balance (void *cls,
     return GNUNET_OK;
   }
   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "Reserve balance `%s' OK\n");
+              "Reserve balance `%s' OK\n",
+              TALER_B2S (&rs->reserve_pub));
 
   /* FIXME: commit new reserve state from auditor DB */