diff --git a/controllers/scriptStorage.js b/controllers/scriptStorage.js
index 4e980d7bb..1ff618087 100644
--- a/controllers/scriptStorage.js
+++ b/controllers/scriptStorage.js
@@ -92,6 +92,15 @@ if (!mediaDB['image/jxr']) {
   });
 }
 
+// Allow some Chromium based browsers to test
+if (!mediaDB['application/signed-exchange']) {
+  mediaDB = _.extend(mediaDB, {
+    'application/signed-exchange' : {
+      source: 'google',
+      extensions: []
+    }
+  });
+}
 
 if (!mediaDB['*/*']) {
   mediaDB = _.extend(mediaDB, {'*/*' : { source: 'iana'}});
@@ -550,7 +559,7 @@ exports.sendScript = function (aReq, aRes, aNext) {
     let matches = null;
     let rAnyLocalMetaUrl = new RegExp(
       '^' + patternHasSameOrigin +
-        '/(?:meta|install|src/scripts)/(.+?)/(.+?)\.meta\.js$'
+        '/(?:meta|install|src/scripts)/(.+?)/(.+?)\.(?:meta|user)\.js$'
     );
     let hasAlternateLocalUpdateURL = false;
 
diff --git a/libs/modelParser.js b/libs/modelParser.js
index ef92ab08b..f074f97a3 100644
--- a/libs/modelParser.js
+++ b/libs/modelParser.js
@@ -233,7 +233,7 @@ var parseScript = function (aScript) {
   );
   var rAnyLocalMetaUrl = new RegExp(
     '^' + patternHasSameOrigin +
-      '/(?:meta|install|src/scripts)/(.+?)/(.+?)\.meta\.js$'
+      '/(?:meta|install|src/scripts)/(.+?)/(.+?)\.(?:meta|user)\.js$'
   );
 
   var rSameOrigin =  new RegExp(