diff --git a/src/js/static-ext-filtering.js b/src/js/static-ext-filtering.js
index 2ff97027e..135cb0980 100644
--- a/src/js/static-ext-filtering.js
+++ b/src/js/static-ext-filtering.js
@@ -636,7 +636,7 @@
     api.compileSelector = (function() {
         const reAfterBeforeSelector = /^(.+?)(::?after|::?before|::[a-z-]+)$/;
         const reStyleSelector = /^(.+?):style\((.+?)\)$/;
-        const reStyleBad = /url\([^)]+\)/;
+        const reStyleBad = /url\(/;
         const reExtendedSyntax = /\[-(?:abp|ext)-[a-z-]+=(['"])(?:.+?)(?:\1)\]/;
         const reExtendedSyntaxParser = /\[-(?:abp|ext)-([a-z-]+)=(['"])(.+?)\2\]/;
         const div = document.createElement('div');