diff --git a/lib/dcell/messages.rb b/lib/dcell/messages.rb
index 99c291c..53ad430 100644
--- a/lib/dcell/messages.rb
+++ b/lib/dcell/messages.rb
@@ -124,7 +124,7 @@ def __dispatch(actor)
         end
          SuccessResponse.new(@id, @sender[:address], value)
       rescue => e
-        ErrorResponse.new(@id, @sender[:address], {:class => RuntimeError.name, :msg => e.to_s})
+        ErrorResponse.new(@id, @sender[:address], {:class => e.class.name, :msg => e.to_s})
       end
 
       def dispatch