diff --git a/lib/hub/commands.rb b/lib/hub/commands.rb
index 6c113f7fc72f0437227a01fec1d02cd5a1aa9ba2..98fcde04a7deb5318c52ba7d69f7ae428970ac59 100644
--- a/lib/hub/commands.rb
+++ b/lib/hub/commands.rb
@@ -924,7 +924,7 @@ help
       params['homepage'] = options[:homepage] if options[:homepage]
 
       load_net_http
-      response = http_post(project.api_create_url('yaml'), params)
+      response = http_post(project.api_create_url('json'), params)
       response.error! unless Net::HTTPSuccess === response
     end
 
diff --git a/test/hub_test.rb b/test/hub_test.rb
index 875027cfd3e6e7b2ed151f957e8f6509e8251825..1a7cff7e5e0d788bba9dd5a243f7a2da11b71429 100644
--- a/test/hub_test.rb
+++ b/test/hub_test.rb
@@ -589,7 +589,7 @@ class HubTest < Test::Unit::TestCase
   def test_create
     stub_no_remotes
     stub_nonexisting_fork('tpw')
-    stub_request(:post, "https://#{auth}github.com/api/v2/yaml/repos/create").
+    stub_request(:post, "https://#{auth}github.com/api/v2/json/repos/create").
       with(:body => { 'name' => 'hub' })
 
     expected = "remote add -f origin git@github.com:tpw/hub.git\n"
@@ -600,7 +600,7 @@ class HubTest < Test::Unit::TestCase
   def test_create_custom_name
     stub_no_remotes
     stub_nonexisting_fork('tpw', 'hubbub')
-    stub_request(:post, "https://#{auth}github.com/api/v2/yaml/repos/create").
+    stub_request(:post, "https://#{auth}github.com/api/v2/json/repos/create").
       with(:body => { 'name' => 'hubbub' })
 
     expected = "remote add -f origin git@github.com:tpw/hubbub.git\n"
@@ -611,7 +611,7 @@ class HubTest < Test::Unit::TestCase
   def test_create_in_organization
     stub_no_remotes
     stub_nonexisting_fork('acme', 'hubbub')
-    stub_request(:post, "https://#{auth}github.com/api/v2/yaml/repos/create").
+    stub_request(:post, "https://#{auth}github.com/api/v2/json/repos/create").
       with(:body => { 'name' => 'acme/hubbub' })
 
     expected = "remote add -f origin git@github.com:acme/hubbub.git\n"
@@ -625,7 +625,7 @@ class HubTest < Test::Unit::TestCase
     stub_request(:get, "http://#{auth}github.com/api/v2/yaml/repos/show/tpw/hub").
       to_return(:status => 404)
 
-    stub_request(:post, "http://#{auth}github.com/api/v2/yaml/repos/create").
+    stub_request(:post, "http://#{auth}github.com/api/v2/json/repos/create").
       with(:body => { 'name' => 'hub' })
 
     expected = "remote add -f origin git@github.com:tpw/hub.git\n"
@@ -641,7 +641,7 @@ class HubTest < Test::Unit::TestCase
   def test_create_failed
     stub_no_remotes
     stub_nonexisting_fork('tpw')
-    stub_request(:post, "https://#{auth}github.com/api/v2/yaml/repos/create").
+    stub_request(:post, "https://#{auth}github.com/api/v2/json/repos/create").
       to_return(:status => [401, "Your token is fail"])
 
     expected = "Error creating repository: Your token is fail (HTTP 401)\n"
@@ -660,7 +660,7 @@ class HubTest < Test::Unit::TestCase
     stub_request(:get, "https://#{auth('mojombo', '123abc')}github.com/api/v2/yaml/repos/show/mojombo/hub").
       to_return(:status => 404)
 
-    stub_request(:post, "https://#{auth('mojombo', '123abc')}github.com/api/v2/yaml/repos/create").
+    stub_request(:post, "https://#{auth('mojombo', '123abc')}github.com/api/v2/json/repos/create").
       with(:body => { 'name' => 'hub' })
 
     expected = "remote add -f origin git@github.com:mojombo/hub.git\n"
@@ -675,7 +675,7 @@ class HubTest < Test::Unit::TestCase
   def test_create_private_repository
     stub_no_remotes
     stub_nonexisting_fork('tpw')
-    stub_request(:post, "https://#{auth}github.com/api/v2/yaml/repos/create").
+    stub_request(:post, "https://#{auth}github.com/api/v2/json/repos/create").
       with(:body => { 'name' => 'hub', 'public' => '0' })
 
     expected = "remote add -f origin git@github.com:tpw/hub.git\n"
@@ -683,10 +683,23 @@ class HubTest < Test::Unit::TestCase
     assert_equal expected, hub("create -p") { ENV['GIT'] = 'echo' }
   end
 
+  def test_create_private_repository_fails
+    stub_no_remotes
+    stub_nonexisting_fork('tpw')
+    stub_request(:post, "https://#{auth}github.com/api/v2/json/repos/create").
+      to_return(:status => [422, "Unprocessable Entity"],
+                :headers => {"Content-type" => "application/json"},
+                :body => %({"error":"repository creation failed: You are over your quota."}))
+
+    expected = "Error creating repository: Unprocessable Entity (HTTP 422)\n"
+    expected << "repository creation failed: You are over your quota.\n"
+    assert_equal expected, hub("create -p") { ENV['GIT'] = 'echo' }
+  end
+
   def test_create_with_description_and_homepage
     stub_no_remotes
     stub_nonexisting_fork('tpw')
-    stub_request(:post, "https://#{auth}github.com/api/v2/yaml/repos/create").with(:body => {
+    stub_request(:post, "https://#{auth}github.com/api/v2/json/repos/create").with(:body => {
       'name' => 'hub', 'description' => 'toyproject', 'homepage' => 'http://example.com'
     })
 
@@ -736,7 +749,7 @@ class HubTest < Test::Unit::TestCase
 
   def test_create_origin_already_exists
     stub_nonexisting_fork('tpw')
-    stub_request(:post, "https://#{auth}github.com/api/v2/yaml/repos/create").
+    stub_request(:post, "https://#{auth}github.com/api/v2/json/repos/create").
       with(:body => { 'name' => 'hub' })
 
     expected = "remote -v\ncreated repository: tpw/hub\n"