diff --git a/lib/layouts/theorems-named.module b/lib/layouts/theorems-named.module
index 25f6aa88d0..b73fc1bd87 100644
--- a/lib/layouts/theorems-named.module
+++ b/lib/layouts/theorems-named.module
@@ -7,6 +7,7 @@
 #Requires: theorems-ams | theorems-starred
 #Original Author: John Perry
 
+Format 30
 Style "Named Theorem"
   CopyStyle Theorem*
   Category Theorem