diff --git a/lms/djangoapps/course_api/blocks/serializers.py b/lms/djangoapps/course_api/blocks/serializers.py
index 8e6cef9871..67c70b7e00 100644
--- a/lms/djangoapps/course_api/blocks/serializers.py
+++ b/lms/djangoapps/course_api/blocks/serializers.py
@@ -37,6 +37,7 @@ class BlockSerializer(serializers.Serializer):  # pylint: disable=abstract-metho
         # create response data dict for basic fields
         data = {
             'id': unicode(block_key),
+            'block_id': unicode(block_key.block_id),
             'lms_web_url': reverse(
                 'jump_to',
                 kwargs={'course_id': unicode(block_key.course_key), 'location': unicode(block_key)},
diff --git a/lms/djangoapps/course_api/blocks/tests/test_serializers.py b/lms/djangoapps/course_api/blocks/tests/test_serializers.py
index af95a96d03..6c118ed3e6 100644
--- a/lms/djangoapps/course_api/blocks/tests/test_serializers.py
+++ b/lms/djangoapps/course_api/blocks/tests/test_serializers.py
@@ -64,7 +64,7 @@ class TestBlockSerializerBase(SharedModuleStoreTestCase):
         )
         self.assertEquals(
             set(serialized_block.iterkeys()),
-            {'id', 'type', 'lms_web_url', 'student_view_url'},
+            {'id', 'block_id', 'type', 'lms_web_url', 'student_view_url'},
         )
 
     def add_additional_requested_fields(self, context=None):