diff --git a/spec/controllers/stats_controller_spec.rb b/spec/controllers/stats_controller_spec.rb
index 980cabfbd..d8dedd133 100644
--- a/spec/controllers/stats_controller_spec.rb
+++ b/spec/controllers/stats_controller_spec.rb
@@ -240,6 +240,8 @@ describe StatsController, type: :controller do
 
   describe "#avis_average_answer_time" do
     before do
+      Timecop.freeze(Time.now)
+
       # 1 week ago
       create(:avis, answer: "voila ma réponse", created_at: 1.week.ago + 1.day, updated_at: 1.week.ago + 2.days) # 1 day
       create(:avis, created_at: 1.week.ago + 2.days)
@@ -255,6 +257,8 @@ describe StatsController, type: :controller do
       create(:avis, answer: "voila ma réponse2", created_at: 3.weeks.ago + 1.day, updated_at: 1.week.ago + 5.days) # 18 day
     end
 
+    after { Timecop.return }
+
     subject { StatsController.new.send(:avis_average_answer_time) }
 
     it { expect(subject.count).to eq(3) }