diff --git a/lib/builder.rb b/lib/builder.rb
index f996cf6e..9c3a2bd1 100644
--- a/lib/builder.rb
+++ b/lib/builder.rb
@@ -258,7 +258,7 @@ class CustomWizard::Builder
           value = field['value_custom'] ? field['value_custom'] : data[field['value']]
           key = field['key']
 
-          if key && value
+          if key && value != nil
             if key.include?('custom_fields')
               keyArr = key.split('.')