diff --git a/src/Orchard.Core.Tests/Common/Providers/CommonPartProviderTests.cs b/src/Orchard.Core.Tests/Common/Providers/CommonPartProviderTests.cs
index 1544fdb2c..fa53d7439 100644
--- a/src/Orchard.Core.Tests/Common/Providers/CommonPartProviderTests.cs
+++ b/src/Orchard.Core.Tests/Common/Providers/CommonPartProviderTests.cs
@@ -49,6 +49,7 @@ namespace Orchard.Core.Tests.Common.Providers {
             builder.RegisterType<DefaultShapeFactory>().As<IShapeFactory>();
             builder.RegisterType<ShapeHelperFactory>().As<IShapeHelperFactory>();
             builder.RegisterType<StubExtensionManager>().As<IExtensionManager>();
+            builder.RegisterInstance(new Mock<IContentDisplay>().Object);
 
             _authn = new Mock<IAuthenticationService>();
             _authz = new Mock<IAuthorizationService>();