diff --git a/avr/modules/com2/defs.asm b/avr/modules/com2/defs.asm
index 56caa7a..30fda1a 100644
--- a/avr/modules/com2/defs.asm
+++ b/avr/modules/com2/defs.asm
@@ -14,7 +14,6 @@
 .equ COM2_BUFFER_SIZE = 24        ; CAVE: must change code in COM2_BufferPosToX when changing this!
 .equ COM2_BUFFER_NUM  = 4
 
-.equ COM2_MAXWAIT_US       = 100  ; maximum wait time in microseconds when waiting for rising/falling clock
 .equ COM2_MAINTENANCE_ADDR = 0xc1