diff --git a/Gemfile.lock b/Gemfile.lock
index f50dc7b9..8ae03428 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -50,7 +50,7 @@ GIT
 
 GIT
   remote: git://github.com/travis-ci/travis-core.git
-  revision: 3c20e66a20d9d540e2a6c5fb70c542fe97c62e25
+  revision: 9a9f4caa2187734d34e98aa61ba5f4a61bc8a9f5
   specs:
     travis-core (0.0.1)
       actionmailer (~> 3.2.19)
diff --git a/lib/travis/api/v3/access_control/user.rb b/lib/travis/api/v3/access_control/user.rb
index 5b6460fe..e48bb577 100644
--- a/lib/travis/api/v3/access_control/user.rb
+++ b/lib/travis/api/v3/access_control/user.rb
@@ -8,7 +8,6 @@ module Travis::API::V3
       user                = Models::User.find(user.id) if user.is_a? ::User
       @user               = user
       @access_permissions = user.permissions.where(user_id: user.id)
-      @got_request        = false
       super()
     end
 
@@ -21,7 +20,6 @@ module Travis::API::V3
     end
 
     def visible_repositories(list)
-      load_permissions
       list.where('repositories.private = false OR repositories.id IN (?)'.freeze, access_permissions.map(&:repository_id))
     end
 
@@ -49,19 +47,7 @@ module Travis::API::V3
 
     def permission?(type, id)
       id = id.id if id.is_a? ::Repository
-
-      load_permissions if @got_request
-      @got_request = true
-
-      if access_permissions.respond_to? :where
-        access_permissions.where(type => true, :repository_id => id).any?
-      else
-        access_permissions.any? { |p| p[type] == true and p.repository_id == id }
-      end
-    end
-
-    def load_permissions
-      @access_permissions = @access_permissions.to_a
+      access_permissions.where(type => true, :repository_id => id).any?
     end
   end
 end
diff --git a/lib/travis/api/v3/models/repository.rb b/lib/travis/api/v3/models/repository.rb
index 778dbf09..ed35b5a2 100644
--- a/lib/travis/api/v3/models/repository.rb
+++ b/lib/travis/api/v3/models/repository.rb
@@ -50,5 +50,17 @@ module Travis::API::V3
     rescue ActiveRecord::RecordNotUnique
       branches.where(name: name).first
     end
+
+    def id_default_branch
+      [id, default_branch_name]
+    end
+
+    def send(name, *args, &block)
+      if name == [:id, :default_branch]
+        name = :id_default_branch
+      end
+
+      __send__(name, *args, &block)
+    end
   end
 end