diff --git a/lib/dm-validations/validation_errors.rb b/lib/dm-validations/validation_errors.rb
index 603b274f..4f5f53cc 100644
--- a/lib/dm-validations/validation_errors.rb
+++ b/lib/dm-validations/validation_errors.rb
@@ -99,7 +99,7 @@ def full_messages
       #   on given field
       def on(field_name)
         errors_for_field = errors[field_name]
-        DataMapper::Ext.blank?(errors_for_field) ? nil : errors_for_field.uniq
+        DataMapper::Ext.blank?(errors_for_field) ? [] : errors_for_field.uniq
       end
 
       def each