diff --git a/src/Umbraco.Tests/PluginManagerTests.cs b/src/Umbraco.Tests/PluginManagerTests.cs
index 0e3abc4710..9544845041 100644
--- a/src/Umbraco.Tests/PluginManagerTests.cs
+++ b/src/Umbraco.Tests/PluginManagerTests.cs
@@ -268,7 +268,7 @@ namespace Umbraco.Tests
         public void Resolves_Assigned_Mappers()
         {
             var foundTypes1 = PluginManager.Current.ResolveAssignedMapperTypes();
-            Assert.AreEqual(17, foundTypes1.Count());
+            Assert.AreEqual(19, foundTypes1.Count());
         }
 
         [Test]