diff --git a/app/controllers/exercises_controller.rb b/app/controllers/exercises_controller.rb
index b96ab0d4b..9c8947fdb 100644
--- a/app/controllers/exercises_controller.rb
+++ b/app/controllers/exercises_controller.rb
@@ -137,7 +137,7 @@ class ExercisesController < ApplicationController
         :course_id => @course.id,
         :time => -1,
         :exercise_status => 1,
-        :is_md => params[:md]
+        :is_md => params[:is_md]
       }
       @exercise = Exercise.create!(exercise_options)
     end