diff --git a/src/ua-parser.js b/src/ua-parser.js
index 805c5c5..da88af6 100755
--- a/src/ua-parser.js
+++ b/src/ua-parser.js
@@ -230,7 +230,7 @@
             /(kindle)\/([\w\.]+)/i,                                             // Kindle
             /(lunascape|maxthon|netfront|jasmine|blazer)[\/ ]?([\w\.]*)/i,      // Lunascape/Maxthon/Netfront/Jasmine/Blazer
             // Trident based
-            /(avant |iemobile|slim)(?:browser)?[\/ ]?([\w\.]*)/i,               // Avant/IEMobile/SlimBrowser
+            /(avant|iemobile|slim)\s?(?:browser)?[\/ ]?([\w\.]*)/i,               // Avant/IEMobile/SlimBrowser
             /(ba?idubrowser)[\/ ]?([\w\.]+)/i,                                  // Baidu Browser
             /(?:ms|\()(ie) ([\w\.]+)/i,                                         // Internet Explorer
 
diff --git a/test/browser-test.json b/test/browser-test.json
index 582578e..38c0410 100644
--- a/test/browser-test.json
+++ b/test/browser-test.json
@@ -114,7 +114,7 @@
         "ua"      : "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; GTB5; Avant Browser; .NET CLR 1.1.4322; .NET CLR 2.0.50727)",
         "expect"  :
         {
-            "name"    : "Avant ",
+            "name"    : "Avant",
             "version" : "undefined",
             "major"   : "undefined"
         }