diff --git a/DigitalData.Core.DTO/AutoMapperExtension.cs b/DigitalData.Core.DTO/AutoMapperExtension.cs
index 44401ec..fa33333 100644
--- a/DigitalData.Core.DTO/AutoMapperExtension.cs
+++ b/DigitalData.Core.DTO/AutoMapperExtension.cs
@@ -4,6 +4,7 @@ namespace DigitalData.Core.DTO
 {
     public static class AutoMapperExtension
     {
+        [Obsolete("use mapper.Map<T>")]
         /// <summary>
         /// Maps a source object to a destination object, or throws an exception if the mapping result is null.
         /// </summary>
@@ -19,4 +20,4 @@ namespace DigitalData.Core.DTO
                    "Hint: Ensure that the AutoMapper profile configuration for this mapping is correct.");
         }
     }
-}
+}
\ No newline at end of file