diff --git a/spec/controllers/articles_controller_spec.rb b/spec/controllers/articles_controller_spec.rb
index e2840dc..7d53472 100644
--- a/spec/controllers/articles_controller_spec.rb
+++ b/spec/controllers/articles_controller_spec.rb
@@ -3,7 +3,7 @@ require 'rails_helper'
 RSpec.describe ArticlesController, type: :controller do
   let!(:category) { create(:category, domain: Category::DOMAIN_NEWS) }
   let!(:params) { FactoryBot.attributes_for(:article).merge!(category_id: category.id) }
-  let!(:invalid_params) { params.merge!(:title => (0..150).map { (65 + rand(26)).chr }.join) }
+  let!(:invalid_params) { params.merge(:title => (0..150).map { (65 + rand(26)).chr }.join) }
   let!(:article) { create(:article, category_id: category.id, user_id: admin.id) }
   let!(:admin) { create(:user, :admin) }
   let!(:user) { create(:user) }
@@ -53,6 +53,10 @@ RSpec.describe ArticlesController, type: :controller do
   end
 
   context 'POST' do
+    before(:each) do
+      expect(:params).not_to eq(:invalid_params)
+    end
+
     describe 'with valid values' do
       it "creates the model" do
         login_admin
@@ -77,10 +81,10 @@ RSpec.describe ArticlesController, type: :controller do
         expect(Article.count).to eq(count)
       end
 
-      it "redirects correctly" do
+      it "renders :new" do
         login_admin
         post :create, params: {:article => invalid_params}
-        expect(response).to redirect_to(article_path(Article.last))
+        expect(response).to render_template("new")
       end
     end
   end
@@ -109,10 +113,10 @@ RSpec.describe ArticlesController, type: :controller do
         expect(Article.find(article.id).attributes).to eq(article.attributes)
       end
 
-      it "redirects correctly" do
+      it "renders :edit" do
         login_admin
-        post :create, params: {:article => invalid_params}
-        expect(response).to redirect_to(article_path(Article.last))
+        put :update, params: {:id => article.id, :article => invalid_params}
+        expect(response).to render_template("edit")
       end
     end
   end
@@ -131,6 +135,7 @@ RSpec.describe ArticlesController, type: :controller do
 
       it "redirects correctly" do
         login_admin
+        request.env["HTTP_REFERER"] = "where_i_came_from"
         delete :destroy, params: {:id => article.id}
 
         expect(response).to redirect_to("where_i_came_from")