diff --git a/lib/gitlab/email/handler/create_issue_handler.rb b/lib/gitlab/email/handler/create_issue_handler.rb
index 19c903e56f58cfb031c6829056fcea4d1a21dee3..638766cca2fa543372a1be37ded55a507f414ad4 100644
--- a/lib/gitlab/email/handler/create_issue_handler.rb
+++ b/lib/gitlab/email/handler/create_issue_handler.rb
@@ -14,7 +14,7 @@ module Gitlab
         end
 
         def can_handle?
-          !!authentication_token
+          !authentication_token.nil?
         end
 
         def execute