diff --git a/app/services/games_service.rb b/app/services/games_service.rb
index f338a4a5..db78c5dc 100755
--- a/app/services/games_service.rb
+++ b/app/services/games_service.rb
@@ -21,6 +21,9 @@ class GamesService
       return{:status => 403}
     end
     game_challenge = Challenge.min.find(game.challenge_id)
+    unless current_user.is_certification_teacher || current_user.admin?
+      game_challenge.answer = ""
+    end
 
     has_answer = game_challenge.answer.blank? ? false : true
     game_challenge.answer = nil