diff --git a/default.openxml b/default.openxml
index 17eaa325b..a3365d90d 100644
--- a/default.openxml
+++ b/default.openxml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8" ?>
-<w:document xmlns:w="http://schemas.openxmlformats.org/wordprocessingml/2006/main">
+<w:document xmlns:w="http://schemas.openxmlformats.org/wordprocessingml/2006/main"
+  xmlns:m="http://schemas.openxmlformats.org/officeDocument/2006/math">
 <w:body>
 $body$
 </w:body>