diff --git a/lib/runner/util.js b/lib/runner/util.js
index 4ef8ba62f..eeb75d88c 100644
--- a/lib/runner/util.js
+++ b/lib/runner/util.js
@@ -198,10 +198,16 @@ module.exports = {
 
             // convert the domains to UrlMatchPattern
             variable._.domainPatterns = new UrlMatchPatternList(null, domains.map((domain) => {
-                const url = new Url(domain);
+                const url = new Url(domain),
+
+                    // Get the host without port
+                    hostWithoutPort = url.getRemote().replace(/:\d+$/, ''),
+
+                    // Create a pattern that matches with or without port
+                    hostPattern = `${hostWithoutPort}(:\\d+)?`;
 
                 // @note URL path is ignored
-                return `${url.protocol || 'https'}://${url.getRemote()}/*`;
+                return `${url.protocol || 'https'}://${hostPattern}/*`;
             }));
         });
 
@@ -219,16 +225,15 @@ module.exports = {
                 return scope.values;
             }
 
-            const urlWithoutPort = urlString.replace(/:\d+/, ''),
-                variables = scope.values.filter((variable) => {
-                    const domainPatterns = variable && variable._ && variable._.domainPatterns;
+            const variables = scope.values.filter((variable) => {
+                const domainPatterns = variable && variable._ && variable._.domainPatterns;
 
-                    if (!domainPatterns) {
-                        return true;
-                    }
+                if (!domainPatterns) {
+                    return true;
+                }
 
-                    return domainPatterns.test(urlWithoutPort);
-                });
+                return domainPatterns.test(urlString);
+            });
 
             return new VariableList(null, variables.map((variable) => {
                 return variable.toJSON(); // clone the variable