diff --git a/app/models/performance.rb b/app/models/performance.rb
index eba7cf5..b1df992 100644
--- a/app/models/performance.rb
+++ b/app/models/performance.rb
@@ -3,6 +3,7 @@ class Performance < ActiveRecord::Base
   belongs_to :user  
   
   def reviewer_name
-   User.find_by_id(self.reviewer).full_name
+    u = User.find_by_id(self.reviewer)
+    u.full_name if u.respond_to?('full_name')
   end
 end