diff --git a/common/content/util.js b/common/content/util.js
index dfcd4468..98233123 100644
--- a/common/content/util.js
+++ b/common/content/util.js
@@ -485,7 +485,7 @@ const util = { //{{{
             // or starts with a known protocol try opening it with a search engine
             // or keyword bookmark
             let proto = url.match(/^(\w+):/);
-            if (/\s/.test(url) || (proto && !Components.classes["@mozilla.org/network/protocol;1?name=" + proto[1]]))
+            if (/\s/.test(url) || !proto || !Components.classes["@mozilla.org/network/protocol;1?name=" + proto[1]])
             {
                 // TODO: it would be clearer if the appropriate call to
                 // getSearchURL was made based on whether or not the first word was