diff --git a/avr/modules/uart_fd/uartfd1.asm b/avr/modules/uart_fd/uartfd1.asm
index 21cfd5a..0703c48 100644
--- a/avr/modules/uart_fd/uartfd1.asm
+++ b/avr/modules/uart_fd/uartfd1.asm
@@ -279,9 +279,6 @@ uartFd1CheckSkipping:
     cbr r16, (1<<UARTFD_IFACE_STATUS_BIT_SKIPPING)
     std Y+UARTFD_IFACE_OFFS_STATUS, r16
 
-  ldi r16, T03_FLAGS_I1_RESTARTED
-  rcall LedSignal_SetFlag
-
     rcall uartFd1RestartReading                      ; (R16, X)
     out SREG, r15
   pop r15
@@ -452,14 +449,17 @@ uartFd1RestartReading:
 ; @clobbers r16, r17, r18, X, Z (r19, r20, r24, r25)
 
 uartFd1FinishReading:
+  ; check message
   mov xl, yl
   mov xh, yh
   adiw xh:xl, UARTFD_IFACE_OFFS_RBUFFER
   rcall NETMSG_CheckMessageInBuffer       ; (R16, R17, R18, R19, R20, X)
   brcc uartFd1FinishReading_errorCrc
+  ; allocate buffer for storage
   rcall NET_Buffer_Alloc                  ; R16=number, X=ptr (R16, R17, X)
   brcc uartFd1FinishReading_errorMem
   ldd r18, Y+NET_IFACE_OFFS_IFACENUM
+  andi r18, 0x0f
   ld r17, X
   andi r17, 0xf0
   or r17, r18
@@ -477,10 +477,11 @@ uartFd1FinishReading_copyLoop:
   rcall NET_AddIncomingMsgNum
   brcs uartFd1FinishReading_msgSaved
   rcall NET_Buffer_ReleaseByNum           ; (R16, X)
-  ldi r16, T03_FLAGS_ADDIN
-  rcall LedSignal_SetFlag                          ; (r17)
   rjmp uartFd1FinishReading_errorMem
 uartFd1FinishReading_msgSaved:
+#ifdef MODULES_LED_ACTIVITY
+  rcall LedActivity_Trigger                       ; (r16)
+#endif
   ldi r16, NET_IFACE_OFFS_PACKETSIN_LOW
   rjmp uartFd1FinishReading_incCounter
 uartFd1FinishReading_errorCrc: