diff --git a/spec/components/plugin/instance_spec.rb b/spec/components/plugin/instance_spec.rb
index 4cc5ab03ce..119cfbcde9 100644
--- a/spec/components/plugin/instance_spec.rb
+++ b/spec/components/plugin/instance_spec.rb
@@ -57,7 +57,7 @@ describe Plugin::Instance do
       end
 
       after do
-        DiscourseEvent.off(:hello, &@set.last)
+        DiscourseEvent.off(:hello, &@set.first)
       end
 
       it "checks enabled/disabled functionality for extensions" do