diff --git a/server/books/schema/mutations/contentblock.py b/server/books/schema/mutations/contentblock.py
index 8539d949..f6a335dd 100644
--- a/server/books/schema/mutations/contentblock.py
+++ b/server/books/schema/mutations/contentblock.py
@@ -29,9 +29,10 @@ class MutateContentBlock(relay.ClientIDMutation):
             title = content_block_data.get('title', None)
             contents = content_block_data.get('contents', None)
             visibility_list = content_block_data.get('visibility', None)
-            block_type = content_block_data.get('type', ContentBlock.NORMAL)
 
             content_block = get_object(ContentBlock, id_param)
+
+            block_type = content_block_data.get('type', content_block.type.upper())
             module = content_block.get_parent().get_parent().specific
 
             if visibility_list is not None:
@@ -47,7 +48,6 @@ class MutateContentBlock(relay.ClientIDMutation):
                 content_block.contents = json.dumps([handle_content_block(c, info.context, module) for c in contents])
 
             content_block.type = set_user_defined_block_type(block_type)
-
             content_block.save()
 
             return cls(content_block=content_block)