diff --git a/avr/devices/t03/main/main.asm b/avr/devices/t03/main/main.asm
index 43e61dd..6fdd478 100644
--- a/avr/devices/t03/main/main.asm
+++ b/avr/devices/t03/main/main.asm
@@ -83,6 +83,13 @@
 .equ UART_HW_MSGNUMOUTBUF_SIZE = 8
 
 
+
+; ---------------------------------------------------------------------------
+; defines for values
+
+.equ VALUE_ID_LEDSIMPLE_TIMING = 0x88
+
+
 ; ***************************************************************************
 ; code segment
 
@@ -202,14 +209,17 @@ checkRecvdMsg:
     brcc checkRecvdMsg_end                    ; no msg, jmp
     rcall NET_Buffer_Locate                   ; (R17)
     ; let system handle incoming messages
-    push xl
-      push xh
-        rcall onMessageReceived
-        rcall mainModulesOnPacketReceived
-        rcall mainAppsOnPacketReceived
-      pop xh
-    pop xl
-    
+    push r16
+      push xl
+        push xh
+          adiw xh:xl, 1
+          rcall onMessageReceived
+          rcall mainModulesOnPacketReceived
+          rcall mainAppsOnPacketReceived
+        pop xh
+      pop xl
+    pop r16
+
     ; forward to other interface
     ld r17, X
     andi r17, (NET_IFACE_BUFFER_IFACENUM1_BIT | NET_IFACE_BUFFER_IFACENUM0_BIT)