diff --git a/src/serve_rendered.js b/src/serve_rendered.js
index 3533031d42..61822bea41 100644
--- a/src/serve_rendered.js
+++ b/src/serve_rendered.js
@@ -23,8 +23,8 @@ import translateLayers from './translate_layers.js';
 
 const FLOAT_PATTERN = '[+-]?(?:\\d+|\\d+.?\\d+)';
 const PATH_PATTERN =
-  /^((fill|stroke|width)\:[^\|]+\|)*((enc:.+)|((-?\d+\.?\d*,-?\d+\.?\d*\|)+(-?\d+\.?\d*,-?\d+\.?\d*)))/;
-const httpTester = /^(http(s)?:)?\/\//;
+  /^((fill|stroke|width)\:[^\|]+\|)*(enc:.+|(-?\d+(\.\d*)?,-?\d+(\.\d*)?\|)+(-?\d+(\.\d*)?,-?\d+(\.\d*)?)*)/;
+const httpTester = /^\/\//;
 
 const mercator = new SphericalMercator();
 const getScale = (scale) => (scale || '@1x').slice(1, 2) | 0;