diff --git a/avr/modules/com2w/com2wn_recv.asm b/avr/modules/com2w/com2wn_recv.asm
index 011871a..ab0b943 100644
--- a/avr/modules/com2w/com2wn_recv.asm
+++ b/avr/modules/com2w/com2wn_recv.asm
@@ -120,9 +120,11 @@ com2wnReadNextBit_end:
 ; @clobbers r16, r17, r18, X
 
 com2wnByteRecvd:
+#ifdef MODULES_LED_ACTIVITY
 push r16
   rcall LedActivity_Trigger
 pop r16
+#endif
   ldd xl, Y+COM2W_IFACE_OFFS_BUFPOS_LOW
   ldd xh, Y+COM2W_IFACE_OFFS_BUFPOS_HIGH
   ldd r17, Y+COM2W_IFACE_OFFS_BUFLEFT