diff --git a/lib/api/notes.rb b/lib/api/notes.rb
index 4ac08a3e8c4751d9df4d45ce14305ebcc214a106..f0116acd90fd6719fb6416e00526e3ea4599c13d 100644
--- a/lib/api/notes.rb
+++ b/lib/api/notes.rb
@@ -19,7 +19,7 @@ module API
         #   GET /projects/:id/issues/:noteable_id/notes
         #   GET /projects/:id/snippets/:noteable_id/notes
         get ":id/#{noteables_str}/:#{noteable_id_str}/notes" do
-          @noteable = user_project.send(:"#{noteables_str}").find(params[:"#{noteable_id_str}"])
+          @noteable = user_project.send(noteables_str.to_sym).find(params[noteable_id_str.to_sym])
           read_ability_name = "read_#{@noteable.class.to_s.underscore.downcase}".to_sym
 
           if can?(current_user, read_ability_name, @noteable)
@@ -36,7 +36,7 @@ module API
               reject { |n| n.cross_reference_not_visible_for?(current_user) }
             present notes, with: Entities::Note
           else
-            render_api_error!("Not found.", 404)
+            not_found!("Notes")
           end
         end
 
@@ -50,7 +50,7 @@ module API
         #   GET /projects/:id/issues/:noteable_id/notes/:note_id
         #   GET /projects/:id/snippets/:noteable_id/notes/:note_id
         get ":id/#{noteables_str}/:#{noteable_id_str}/notes/:note_id" do
-          @noteable = user_project.send(:"#{noteables_str}").find(params[:"#{noteable_id_str}"])
+          @noteable = user_project.send(noteables_str.to_sym).find(params[noteable_id_str.to_sym])
           @note = @noteable.notes.find(params[:note_id])
 
           if @note.cross_reference_not_visible_for?(current_user)
diff --git a/spec/requests/api/notes_spec.rb b/spec/requests/api/notes_spec.rb
index f5b31be1ba335b8fc636b0589986935af313b6b9..f9bfee94424a3e375cc109246dff88e3a1d1d611 100644
--- a/spec/requests/api/notes_spec.rb
+++ b/spec/requests/api/notes_spec.rb
@@ -39,6 +39,7 @@ describe API::API, api: true  do
     context "when noteable is an Issue" do
       it "should return an array of issue notes" do
         get api("/projects/#{project.id}/issues/#{issue.id}/notes", user)
+
         expect(response.status).to eq(200)
         expect(json_response).to be_an Array
         expect(json_response.first['body']).to eq(issue_note.note)
@@ -46,12 +47,14 @@ describe API::API, api: true  do
 
       it "should return a 404 error when issue id not found" do
         get api("/projects/#{project.id}/issues/12345/notes", user)
+
         expect(response.status).to eq(404)
       end
 
       context "that references a private issue" do
         it "should return an empty array" do
           get api("/projects/#{ext_proj.id}/issues/#{ext_issue.id}/notes", user)
+
           expect(response.status).to eq(200)
           expect(json_response).to be_an Array
           expect(json_response).to be_empty
@@ -62,6 +65,7 @@ describe API::API, api: true  do
 
           it "returns 404" do
             get api("/projects/#{ext_proj.id}/issues/#{ext_issue.id}/notes", user)
+
             expect(response.status).to eq(404)
           end
         end
@@ -69,6 +73,7 @@ describe API::API, api: true  do
         context "and current user can view the note" do
           it "should return an empty array" do
             get api("/projects/#{ext_proj.id}/issues/#{ext_issue.id}/notes", private_user)
+
             expect(response.status).to eq(200)
             expect(json_response).to be_an Array
             expect(json_response.first['body']).to eq(cross_reference_note.note)
@@ -80,6 +85,7 @@ describe API::API, api: true  do
     context "when noteable is a Snippet" do
       it "should return an array of snippet notes" do
         get api("/projects/#{project.id}/snippets/#{snippet.id}/notes", user)
+
         expect(response.status).to eq(200)
         expect(json_response).to be_an Array
         expect(json_response.first['body']).to eq(snippet_note.note)
@@ -87,11 +93,13 @@ describe API::API, api: true  do
 
       it "should return a 404 error when snippet id not found" do
         get api("/projects/#{project.id}/snippets/42/notes", user)
+
         expect(response.status).to eq(404)
       end
 
       it "returns 404 when not authorized" do
         get api("/projects/#{project.id}/snippets/#{snippet.id}/notes", private_user)
+
         expect(response.status).to eq(404)
       end
     end
@@ -99,6 +107,7 @@ describe API::API, api: true  do
     context "when noteable is a Merge Request" do
       it "should return an array of merge_requests notes" do
         get api("/projects/#{project.id}/merge_requests/#{merge_request.id}/notes", user)
+
         expect(response.status).to eq(200)
         expect(json_response).to be_an Array
         expect(json_response.first['body']).to eq(merge_request_note.note)
@@ -106,11 +115,13 @@ describe API::API, api: true  do
 
       it "should return a 404 error if merge request id not found" do
         get api("/projects/#{project.id}/merge_requests/4444/notes", user)
+
         expect(response.status).to eq(404)
       end
 
       it "returns 404 when not authorized" do
         get api("/projects/#{project.id}/merge_requests/4444/notes", private_user)
+
         expect(response.status).to eq(404)
       end
     end
@@ -120,24 +131,28 @@ describe API::API, api: true  do
     context "when noteable is an Issue" do
       it "should return an issue note by id" do
         get api("/projects/#{project.id}/issues/#{issue.id}/notes/#{issue_note.id}", user)
+
         expect(response.status).to eq(200)
         expect(json_response['body']).to eq(issue_note.note)
       end
 
       it "should return a 404 error if issue note not found" do
         get api("/projects/#{project.id}/issues/#{issue.id}/notes/12345", user)
+
         expect(response.status).to eq(404)
       end
 
       context "that references a private issue" do
         it "should return a 404 error" do
           get api("/projects/#{ext_proj.id}/issues/#{ext_issue.id}/notes/#{cross_reference_note.id}", user)
+
           expect(response.status).to eq(404)
         end
 
         context "and current user can view the note" do
           it "should return an issue note by id" do
             get api("/projects/#{ext_proj.id}/issues/#{ext_issue.id}/notes/#{cross_reference_note.id}", private_user)
+
             expect(response.status).to eq(200)
             expect(json_response['body']).to eq(cross_reference_note.note)
           end
@@ -148,12 +163,14 @@ describe API::API, api: true  do
     context "when noteable is a Snippet" do
       it "should return a snippet note by id" do
         get api("/projects/#{project.id}/snippets/#{snippet.id}/notes/#{snippet_note.id}", user)
+
         expect(response.status).to eq(200)
         expect(json_response['body']).to eq(snippet_note.note)
       end
 
       it "should return a 404 error if snippet note not found" do
         get api("/projects/#{project.id}/snippets/#{snippet.id}/notes/12345", user)
+
         expect(response.status).to eq(404)
       end
     end
@@ -163,6 +180,7 @@ describe API::API, api: true  do
     context "when noteable is an Issue" do
       it "should create a new issue note" do
         post api("/projects/#{project.id}/issues/#{issue.id}/notes", user), body: 'hi!'
+
         expect(response.status).to eq(201)
         expect(json_response['body']).to eq('hi!')
         expect(json_response['author']['username']).to eq(user.username)
@@ -170,11 +188,13 @@ describe API::API, api: true  do
 
       it "should return a 400 bad request error if body not given" do
         post api("/projects/#{project.id}/issues/#{issue.id}/notes", user)
+
         expect(response.status).to eq(400)
       end
 
       it "should return a 401 unauthorized error if user not authenticated" do
         post api("/projects/#{project.id}/issues/#{issue.id}/notes"), body: 'hi!'
+
         expect(response.status).to eq(401)
       end
 
@@ -183,6 +203,7 @@ describe API::API, api: true  do
           creation_time = 2.weeks.ago
           post api("/projects/#{project.id}/issues/#{issue.id}/notes", user),
             body: 'hi!', created_at: creation_time
+
           expect(response.status).to eq(201)
           expect(json_response['body']).to eq('hi!')
           expect(json_response['author']['username']).to eq(user.username)
@@ -195,6 +216,7 @@ describe API::API, api: true  do
     context "when noteable is a Snippet" do
       it "should create a new snippet note" do
         post api("/projects/#{project.id}/snippets/#{snippet.id}/notes", user), body: 'hi!'
+
         expect(response.status).to eq(201)
         expect(json_response['body']).to eq('hi!')
         expect(json_response['author']['username']).to eq(user.username)
@@ -202,11 +224,13 @@ describe API::API, api: true  do
 
       it "should return a 400 bad request error if body not given" do
         post api("/projects/#{project.id}/snippets/#{snippet.id}/notes", user)
+
         expect(response.status).to eq(400)
       end
 
       it "should return a 401 unauthorized error if user not authenticated" do
         post api("/projects/#{project.id}/snippets/#{snippet.id}/notes"), body: 'hi!'
+
         expect(response.status).to eq(401)
       end
     end
@@ -246,6 +270,7 @@ describe API::API, api: true  do
       it 'should return modified note' do
         put api("/projects/#{project.id}/issues/#{issue.id}/"\
                   "notes/#{issue_note.id}", user), body: 'Hello!'
+
         expect(response.status).to eq(200)
         expect(json_response['body']).to eq('Hello!')
       end
@@ -253,12 +278,14 @@ describe API::API, api: true  do
       it 'should return a 404 error when note id not found' do
         put api("/projects/#{project.id}/issues/#{issue.id}/notes/12345", user),
                 body: 'Hello!'
+
         expect(response.status).to eq(404)
       end
 
       it 'should return a 400 bad request error if body not given' do
         put api("/projects/#{project.id}/issues/#{issue.id}/"\
                   "notes/#{issue_note.id}", user)
+
         expect(response.status).to eq(400)
       end
     end
@@ -267,6 +294,7 @@ describe API::API, api: true  do
       it 'should return modified note' do
         put api("/projects/#{project.id}/snippets/#{snippet.id}/"\
                   "notes/#{snippet_note.id}", user), body: 'Hello!'
+
         expect(response.status).to eq(200)
         expect(json_response['body']).to eq('Hello!')
       end
@@ -274,6 +302,7 @@ describe API::API, api: true  do
       it 'should return a 404 error when note id not found' do
         put api("/projects/#{project.id}/snippets/#{snippet.id}/"\
                   "notes/12345", user), body: "Hello!"
+
         expect(response.status).to eq(404)
       end
     end
@@ -282,6 +311,7 @@ describe API::API, api: true  do
       it 'should return modified note' do
         put api("/projects/#{project.id}/merge_requests/#{merge_request.id}/"\
                   "notes/#{merge_request_note.id}", user), body: 'Hello!'
+
         expect(response.status).to eq(200)
         expect(json_response['body']).to eq('Hello!')
       end
@@ -289,6 +319,7 @@ describe API::API, api: true  do
       it 'should return a 404 error when note id not found' do
         put api("/projects/#{project.id}/merge_requests/#{merge_request.id}/"\
                   "notes/12345", user), body: "Hello!"
+
         expect(response.status).to eq(404)
       end
     end