diff --git a/app/controllers/events_controller.rb b/app/controllers/events_controller.rb
index 94358b0ea..adad44044 100644
--- a/app/controllers/events_controller.rb
+++ b/app/controllers/events_controller.rb
@@ -10,6 +10,6 @@ class EventsController < ApplicationController
   end
 
   def show
-    @event = Event.find_by(slug: params[:id])
+    @event = Event.find_by!(slug: params[:id])
   end
 end
diff --git a/spec/requests/events_spec.rb b/spec/requests/events_spec.rb
index 1f5bca240..8c0bc70f5 100644
--- a/spec/requests/events_spec.rb
+++ b/spec/requests/events_spec.rb
@@ -15,10 +15,18 @@ RSpec.describe "Events", type: :request do
       get "/events"
       expect(response.body).not_to include(unpublished_event.title)
     end
+  end
 
+  describe "GET events#show" do
     it "returns event show page" do
       get "/events/#{event.slug}"
       expect(response.body).to include event.title
     end
+
+    it "renders not_found" do
+      expect do
+        get "/events/NotSlug-#{event.slug}"
+      end.to raise_error(ActiveRecord::RecordNotFound)
+    end
   end
 end