diff --git a/app/controllers/discourse_donations/charges_controller.rb b/app/controllers/discourse_donations/charges_controller.rb
index 8cb9f90..c7a04f8 100644
--- a/app/controllers/discourse_donations/charges_controller.rb
+++ b/app/controllers/discourse_donations/charges_controller.rb
@@ -14,9 +14,12 @@ module DiscourseDonations
         response = {}
       end
 
+      response['rewards'] = []
+
       if reward_user?(payment)
         reward = DiscourseDonations::Rewards.new(current_user)
-        reward.add_to_group(SiteSetting.discourse_donations_reward_group) if add_to_group?
+        group_name = SiteSetting.discourse_donations_reward_group
+        reward.add_to_group(group_name) if group_name.present?
       end
 
       render :json => response
@@ -28,10 +31,6 @@ module DiscourseDonations
       payment.present? && payment.successful? && current_user.present?
     end
 
-    def add_to_group?
-      SiteSetting.discourse_donations_reward_group.present?
-    end
-
     def secret_key
       SiteSetting.discourse_donations_secret_key
     end
diff --git a/spec/controllers/discourse_donations/charges_controller_spec.rb b/spec/controllers/discourse_donations/charges_controller_spec.rb
index 35398ff..978c23b 100644
--- a/spec/controllers/discourse_donations/charges_controller_spec.rb
+++ b/spec/controllers/discourse_donations/charges_controller_spec.rb
@@ -26,5 +26,11 @@ module DiscourseDonations
       post :create
       expect(response).to have_http_status(200)
     end
+
+    it 'has no rewards' do
+      current_user = log_in(:coding_horror)
+      post :create
+      expect(JSON.parse(response.body)['rewards']).to eq([])
+    end
   end
 end
diff --git a/spec/services/discourse_donations/rewards_spec.rb b/spec/services/discourse_donations/rewards_spec.rb
index 2155dc1..7c40afa 100644
--- a/spec/services/discourse_donations/rewards_spec.rb
+++ b/spec/services/discourse_donations/rewards_spec.rb
@@ -2,7 +2,7 @@ require 'rails_helper'
 
 module DiscourseDonations
   RSpec.describe DiscourseDonations::Rewards do
-    let(:grp) { Fabricate(:group, name: 'w00t') }
+    let(:grp) { Fabricate(:group) }
     let(:user) { Fabricate(:user) }
     subject { described_class.new(user) }