diff --git a/test/Microsoft.AspNet.Hosting.Tests/HostingServicesFacts.cs b/test/Microsoft.AspNet.Hosting.Tests/HostingServicesFacts.cs
index 4b2e7ae14e..65aa6faecd 100644
--- a/test/Microsoft.AspNet.Hosting.Tests/HostingServicesFacts.cs
+++ b/test/Microsoft.AspNet.Hosting.Tests/HostingServicesFacts.cs
@@ -84,7 +84,7 @@ namespace Microsoft.AspNet.Hosting.Tests
             fallbackServices.AddTransient<IFakeService, FakeService>();
 
             // Act
-            var exp = Assert.Throws<Exception>(() => HostingServices.Create(fallbackServices.BuildServiceProvider()));
+            var exp = Assert.Throws<InvalidOperationException>(() => HostingServices.Create(fallbackServices.BuildServiceProvider()));
 
 
             // Assert
diff --git a/test/Microsoft.AspNet.TestHost.Tests/TestServerTests.cs b/test/Microsoft.AspNet.TestHost.Tests/TestServerTests.cs
index 52267bba35..4f8b619dd7 100644
--- a/test/Microsoft.AspNet.TestHost.Tests/TestServerTests.cs
+++ b/test/Microsoft.AspNet.TestHost.Tests/TestServerTests.cs
@@ -34,7 +34,7 @@ namespace Microsoft.AspNet.TestHost
             var services = new ServiceCollection().BuildServiceProvider();
 
             // Act & Assert
-            Assert.Throws<Exception>(() => TestServer.Create(services, new Startup().Configuration));
+            Assert.Throws<InvalidOperationException>(() => TestServer.Create(services, new Startup().Configuration));
         }
 
         [Fact]