diff --git a/app/controllers/personal_courses_controller.rb b/app/controllers/personal_courses_controller.rb
index 1f8aacf..3376472 100644
--- a/app/controllers/personal_courses_controller.rb
+++ b/app/controllers/personal_courses_controller.rb
@@ -5,8 +5,8 @@ class PersonalCoursesController < ApplicationController
 	      {
 	        "year" => course.year,
 	        "title" => course.title,
-	        "category" => course.course_category.title,
-	        "semester" => course.course_semester.title,
+	        "category" => (course.course_category.title rescue ""),
+	        "semester" => (course.course_semester.title rescue ""),
 	        "authors" => (course.member_profile.name rescue ""),
 	        "link_to_show" => OrbitHelper.url_to_show(course.to_param)
 	      }