diff --git a/spec/models/post_alert_observer_spec.rb b/spec/models/post_alert_observer_spec.rb
index d33325166c9..e819278243c 100644
--- a/spec/models/post_alert_observer_spec.rb
+++ b/spec/models/post_alert_observer_spec.rb
@@ -97,7 +97,6 @@ describe PostAlertObserver do
     let(:user) { Fabricate(:user) }
     let(:mention_post) { Fabricate(:post, user: user, raw: 'Hello @eviltrout')}
     let(:topic) { mention_post.topic }
-    let(:post)
 
     it "won't notify someone who can't see the post" do
       lambda {