diff --git a/avr/defs_all.asm b/avr/defs_all.asm
index 7acc9df..317fdf7 100644
--- a/avr/defs_all.asm
+++ b/avr/defs_all.asm
@@ -7,6 +7,7 @@
 ; * Please see toplevel file COPYING of that project for license details.   *
 ; ***************************************************************************
 
+.error "Dont include this, use devices/all/defs.asm instead"
 
 
 .equ AQHOME_VALUETYPE_UNKNOWN  = 0