diff --git a/spec/lib/email/renderer_spec.rb b/spec/lib/email/renderer_spec.rb
index 6a89b270e80..63570ceb315 100644
--- a/spec/lib/email/renderer_spec.rb
+++ b/spec/lib/email/renderer_spec.rb
@@ -24,6 +24,7 @@ RSpec.describe Email::Renderer do
   end
 
   context "with email_renderer_html modifier" do
+    after { DiscoursePluginRegistry.reset! }
     it "can modify the html" do
       Plugin::Instance
         .new