diff --git a/src/NzbDrone.Core/Validation/Paths/AuthorExistsValidator.cs b/src/NzbDrone.Core/Validation/Paths/AuthorExistsValidator.cs
index 6f28ff199..d7d7bbc07 100644
--- a/src/NzbDrone.Core/Validation/Paths/AuthorExistsValidator.cs
+++ b/src/NzbDrone.Core/Validation/Paths/AuthorExistsValidator.cs
@@ -21,7 +21,9 @@ namespace NzbDrone.Core.Validation.Paths
                 return true;
             }
 
-            return !_authorService.GetAllAuthors().Exists(s => s.Metadata.Value.ForeignAuthorId == context.PropertyValue.ToString());
+            var foreignAuthorId = context.PropertyValue.ToString();
+
+            return _authorService.FindById(foreignAuthorId) == null;
         }
     }
 }