diff --git a/lib/layouts/letter.layout b/lib/layouts/letter.layout
index 375b902d19..a01114a41d 100644
--- a/lib/layouts/letter.layout
+++ b/lib/layouts/letter.layout
@@ -11,6 +11,7 @@ Input stdlists.inc
 Input lyxmacros.inc
 Input stdfloats.inc
 Input stdcounters.inc
+Input stdlayouts.inc
 
 NoStyle         Right_Address
 NoStyle         Address