diff --git a/lib/api/projects.rb b/lib/api/projects.rb
index e6df6b4e..f1e0f32e 100644
--- a/lib/api/projects.rb
+++ b/lib/api/projects.rb
@@ -4,6 +4,15 @@ module Gitlab
     before { authenticate! }
 
     resource :projects do
+      helpers do
+        def handle_project_member_errors(errors)
+          if errors[:project_access].any?
+            error!(errors[:project_access], 422)
+          end
+          not_found!
+        end
+      end
+
       # Get a projects list for authenticated user
       #
       # Example Request:
@@ -36,6 +45,7 @@ module Gitlab
       # Example Request
       #   POST /projects
       post do
+        error!("Name is required", 400) if !params.has_key? :name
         attrs = attributes_for_keys [:name,
                                     :description,
                                     :default_branch,
@@ -43,6 +53,7 @@ module Gitlab
                                     :wall_enabled,
                                     :merge_requests_enabled,
                                     :wiki_enabled]
+
         @project = ::Projects::CreateContext.new(current_user, attrs).execute
         if @project.saved?
           present @project, with: Entities::Project
@@ -106,10 +117,7 @@ module Gitlab
           @member = team_member.user
           present @member, with: Entities::ProjectMember, project: user_project
         else
-          if team_member.errors[:project_access].any?
-            error!(team_member.errors[:project_access], 422)
-          end
-          not_found!
+          handle_project_member_errors team_member.errors
         end
       end
 
@@ -132,10 +140,7 @@ module Gitlab
           @member = team_member.user
           present @member, with: Entities::ProjectMember, project: user_project
         else
-          if team_member.errors[:project_access].any?
-            error!(team_member.errors[:project_access], 422)
-          end
-          not_found!
+          handle_project_member_errors team_member.errors
         end
       end
 
@@ -210,8 +215,9 @@ module Gitlab
         @hook = user_project.hooks.find(params[:hook_id])
         authorize! :admin_project, user_project
 
-        attrs = attributes_for_keys [:url]
+        error!("Url not given", 400) if !params.has_key? :url
 
+        attrs = attributes_for_keys [:url]
         if @hook.update_attributes attrs
           present @hook, with: Entities::Hook
         else
diff --git a/spec/requests/api/projects_spec.rb b/spec/requests/api/projects_spec.rb
index 91632407..11c3d012 100644
--- a/spec/requests/api/projects_spec.rb
+++ b/spec/requests/api/projects_spec.rb
@@ -46,9 +46,9 @@ describe Gitlab::API do
       response.status.should == 201
     end
 
-    it "should respond with 404 on failure" do
+    it "should respond with 400 if name is not given" do
       post api("/projects", user)
-      response.status.should == 404
+      response.status.should == 400
     end
 
     it "should assign attributes to project" do
@@ -237,6 +237,13 @@ describe Gitlab::API do
         delete api("/projects/#{project.id}/members/#{user3.id}", user)
       }.to change { UsersProject.count }.by(-1)
     end
+
+    it "should return 200 if team member is not part of a project" do
+      delete api("/projects/#{project.id}/members/#{user3.id}", user)
+      expect {
+        delete api("/projects/#{project.id}/members/#{user3.id}", user)
+      }.to_not change { UsersProject.count }.by(1)
+    end
   end
 
   describe "DELETE /projects/:id/members/:user_id" do
@@ -268,6 +275,11 @@ describe Gitlab::API do
       response.status.should == 200
       json_response['url'].should == hook.url
     end
+
+    it "should return a 404 error if hook id is not available" do
+      get api("/projects/#{project.id}/hooks/1234", user)
+      response.status.should == 404
+    end
   end
 
   describe "POST /projects/:id/hooks" do
@@ -276,6 +288,7 @@ describe Gitlab::API do
         post api("/projects/#{project.id}/hooks", user),
           "url" => "http://example.com"
       }.to change {project.hooks.count}.by(1)
+      response.status.should == 200
     end
   end
 
@@ -286,8 +299,17 @@ describe Gitlab::API do
       response.status.should == 200
       json_response['url'].should == 'http://example.org'
     end
-  end
 
+    it "should return 404 error if hook id is not found" do
+      put api("/projects/#{project.id}/hooks/1234", user), url: 'http://example.org'
+      response.status.should == 404
+    end
+
+    it "should return 400 error if url is not given" do
+      put api("/projects/#{project.id}/hooks/#{hook.id}", user)
+      response.status.should == 400
+    end
+  end
 
   describe "DELETE /projects/:id/hooks" do
     it "should delete hook from project" do
@@ -295,6 +317,7 @@ describe Gitlab::API do
         delete api("/projects/#{project.id}/hooks", user),
           hook_id: hook.id
       }.to change {project.hooks.count}.by(-1)
+      response.status.should == 200
     end
   end