diff --git a/app/models/topic_link_click.rb b/app/models/topic_link_click.rb
index 1e98ec4615a..3afce0bfbd5 100644
--- a/app/models/topic_link_click.rb
+++ b/app/models/topic_link_click.rb
@@ -36,7 +36,7 @@ class TopicLinkClick < ActiveRecord::Base
 
     # link can have query params, and analytics can add more to the end:
     i = url.length
-    while i = url.rindex('&', i-1)
+    while i = url.rindex('&', i - 1)
       urls << url[0...i]
     end