Index: asterisk-11.7.0/main/manager.c
===================================================================
--- asterisk-11.7.0.orig/main/manager.c
+++ asterisk-11.7.0/main/manager.c
@@ -4782,6 +4782,8 @@ static enum add_filter_result manager_ad
 		ao2_t_link(whitefilters, new_filter, "link new filter into white user container");
 	}
 
+	ao2_ref(new_filter, -1);
+
 	return FILTER_SUCCESS;
 }