diff --git a/common/djangoapps/enrollment/serializers.py b/common/djangoapps/enrollment/serializers.py
index 35ad3a1cbed1..c8026bb60fa0 100644
--- a/common/djangoapps/enrollment/serializers.py
+++ b/common/djangoapps/enrollment/serializers.py
@@ -107,11 +107,11 @@ def get_grading(self, model):
                         summary.append(section)
             except PermissionDenied:
                 pass
-        return [
-            {u'current_grade': current_grade,
-             u'certificate_eligible': course_grade.passed if course_grade else False,
-             u'summary': summary}
-        ]
+        return {
+            u'current_grade': current_grade,
+            u'certificate_eligible': course_grade.passed if course_grade else False,
+            u'summary': summary
+        }
 
     class Meta(object):
         model = CourseEnrollment