diff --git a/bus/signals.c b/bus/signals.c
index 54ab03e..ff7770d 100644
--- a/bus/signals.c
+++ b/bus/signals.c
@@ -1188,6 +1188,7 @@ bus_matchmaker_new (void)
       else
         _dbus_hash_table_unref (p->rules_by_iface);
     }
+  dbus_free (matchmaker);
 
   return NULL;
 }