diff --git a/src/Umbraco.Web/Editors/ContentTypeControllerBase.cs b/src/Umbraco.Web/Editors/ContentTypeControllerBase.cs
index 773f2830ca..9cfde94a3a 100644
--- a/src/Umbraco.Web/Editors/ContentTypeControllerBase.cs
+++ b/src/Umbraco.Web/Editors/ContentTypeControllerBase.cs
@@ -174,7 +174,7 @@ namespace Umbraco.Web.Editors
                         break;
 
                     case UmbracoObjectTypes.MediaType:
-                        source = Services.ContentTypeService.Get(contentTypeId);
+                        source = Services.MediaTypeService.Get(contentTypeId);
                         break;
 
                     case UmbracoObjectTypes.MemberType: