diff --git a/src/JAXL/http/http_server.php b/src/JAXL/http/http_server.php
index a50a3d11..ffb831c8 100644
--- a/src/JAXL/http/http_server.php
+++ b/src/JAXL/http/http_server.php
@@ -138,7 +138,7 @@ public function on_request($sock, $raw)
             $request->body($raw);
         } else {
             // break on crlf
-            $lines = explode(HTTP_CRLF, $raw);
+            $lines = explode(self::HTTP_CRLF, $raw);
 
             // parse request line
             if ($request->state() == 'wait_for_request_line') {