diff --git a/src/Umbraco.Web/Editors/ContentTypeControllerBase.cs b/src/Umbraco.Web/Editors/ContentTypeControllerBase.cs
index 753e882772..247bf5bb0b 100644
--- a/src/Umbraco.Web/Editors/ContentTypeControllerBase.cs
+++ b/src/Umbraco.Web/Editors/ContentTypeControllerBase.cs
@@ -191,7 +191,7 @@ namespace Umbraco.Web.Editors
             
             //Validate that there's no other ct with the same name
             var exists = getContentTypeByAlias(contentTypeSave.Alias);
-            if (exists != null)
+            if (exists != null && exists.Id != ctId)
             {
                 ModelState.AddModelError("Alias", "A content type with this alias already exists");
             }