diff --git a/cms/djangoapps/contentstore/rest_api/v1/serializers/course_details.py b/cms/djangoapps/contentstore/rest_api/v1/serializers/course_details.py
index b799e6d2038..b84626f3444 100644
--- a/cms/djangoapps/contentstore/rest_api/v1/serializers/course_details.py
+++ b/cms/djangoapps/contentstore/rest_api/v1/serializers/course_details.py
@@ -10,10 +10,10 @@
 class InstructorInfoSerializer(serializers.Serializer):
     """ Serializer for instructor info """
     name = serializers.CharField(allow_blank=True)
-    title = serializers.CharField(allow_blank=True)
-    organization = serializers.CharField(allow_blank=True)
-    image = serializers.CharField(allow_blank=True)
-    bio = serializers.CharField(allow_blank=True)
+    title = serializers.CharField(allow_blank=True, required=False)
+    organization = serializers.CharField(allow_blank=True, required=False)
+    image = serializers.CharField(allow_blank=True, required=False)
+    bio = serializers.CharField(allow_blank=True, required=False)
 
 
 class InstructorsSerializer(serializers.Serializer):