diff --git a/spec/models/exercise_spec.rb b/spec/models/exercise_spec.rb
index c1e96032..f91ed4fa 100644
--- a/spec/models/exercise_spec.rb
+++ b/spec/models/exercise_spec.rb
@@ -69,7 +69,7 @@ describe Exercise do
 
     context 'without submissions' do
       it 'returns nil' do
-        expect(exercise.average_score).to be nil
+        expect(exercise.average_score).to be 0
       end
     end