diff --git a/modules/exploits/multi/browser/firefox_webidl_injection.rb b/modules/exploits/multi/browser/firefox_webidl_injection.rb
index 155499f4f0..194c1920ba 100644
--- a/modules/exploits/multi/browser/firefox_webidl_injection.rb
+++ b/modules/exploits/multi/browser/firefox_webidl_injection.rb
@@ -15,7 +15,7 @@ class Metasploit3 < Msf::Exploit::Remote
 
   autopwn_info({
     :ua_name    => HttpClients::FF,
-    :ua_maxver  => "22.0",
+    :ua_minver  => "22.0",
     :ua_maxver  => "27.0",
     :javascript => true,
     :rank       => ExcellentRanking