diff --git a/src/acl.c b/src/acl.c
index 954233521..2aff18e4f 100644
--- a/src/acl.c
+++ b/src/acl.c
@@ -411,8 +411,9 @@ struct acl_expr *parse_acl_expr(const char **args, char **err, struct arg_list *
 
 	if (aclkw) {
 		if (((aclkw->match_type == PAT_MATCH_BEG || aclkw->match_type == PAT_MATCH_DIR || aclkw->match_type == PAT_MATCH_DOM ||
-		     aclkw->match_type == PAT_MATCH_DOM || aclkw->match_type == PAT_MATCH_END || aclkw->match_type == PAT_MATCH_LEN ||
-		     aclkw->match_type == PAT_MATCH_REG) && expr->pat.match != pat_match_fcts[aclkw->match_type]) ||
+		      aclkw->match_type == PAT_MATCH_DOM || aclkw->match_type == PAT_MATCH_END || aclkw->match_type == PAT_MATCH_LEN ||
+		      aclkw->match_type == PAT_MATCH_REG || aclkw->match_type == PAT_MATCH_SUB) &&
+		     expr->pat.match != pat_match_fcts[aclkw->match_type]) ||
 		    (aclkw->match && expr->pat.match != aclkw->match))
 			ha_warning("parsing [%s:%d] : original matching method '%s' was overwritten and will not be applied as expected.\n",
 				   file, line, aclkw->kw);