diff --git a/src/http_act.c b/src/http_act.c
index 12a9a9f..8574a7d 100644
--- a/src/http_act.c
+++ b/src/http_act.c
@@ -526,6 +526,9 @@
 	else if (rule->action == 4) // replace-pathq
 		uri = http_get_path(uri);
 
+	if (!istlen(uri))
+		goto leave;
+
 	if (!regex_exec_match2(rule->arg.http.re, uri.ptr, uri.len, MAX_MATCH, pmatch, 0))
 		goto leave;