diff --git a/db/migrate/20150930132305_move_points_category_to_categorization_tables.rb b/db/migrate/20150930132305_move_points_category_to_categorization_tables.rb
index 794969d..0a070de 100644
--- a/db/migrate/20150930132305_move_points_category_to_categorization_tables.rb
+++ b/db/migrate/20150930132305_move_points_category_to_categorization_tables.rb
@@ -3,6 +3,7 @@ class MovePointsCategoryToCategorizationTables < ActiveRecord::Migration
   	Merit::PointRules::AVAILABLE_RULES.each do |name, setting|
   	  type = GamificationPlugin::PointsType.create(name: name.to_s, description: setting[:description])
   	  env = Environment.default
+      next if env.blank?
   	  settings = Noosfero::Plugin::Settings.new(env, GamificationPlugin)
       weight = settings.settings.fetch(:point_rules, {}).fetch(name.to_s, {}).fetch('weight', setting[:default_weight]).to_i
   	  cat = GamificationPlugin::PointsCategorization.create(point_type_id: type.id, weight: weight)
--
libgit2 0.21.2