diff --git a/tracker/software/pkt/channels/pktservice.h b/tracker/software/pkt/channels/pktservice.h
index 80bb9d6a..525069c1 100644
--- a/tracker/software/pkt/channels/pktservice.h
+++ b/tracker/software/pkt/channels/pktservice.h
@@ -458,7 +458,7 @@ static inline msg_t pktReceiveDataBufferTimeout(packet_svc_t *handler,
  *
  * @api
  */
-static inline msg_t pktIsBufferValidAX25Frame(pkt_data_object_t *object) {
+static inline bool pktIsBufferValidAX25Frame(pkt_data_object_t *object) {
   chDbgAssert(object != NULL, "no pointer to packet object buffer");
   uint16_t frame_size = object->packet_size;
   return ((object->status & EVT_AFSK_DECODE_DONE)
diff --git a/tracker/software/pkt/devices/si446x.c b/tracker/software/pkt/devices/si446x.c
index b5a5a64e..d81099e4 100644
--- a/tracker/software/pkt/devices/si446x.c
+++ b/tracker/software/pkt/devices/si446x.c
@@ -1128,9 +1128,16 @@ void Si446x_mapCallback(pkt_data_object_t *pkt_buff) {
 #if DUMP_PACKET_TO_SERIAL == TRUE
   pktDiagnosticOutput(pkt_buff->handler, pkt_buff);
 #endif
-
+if(pktIsBufferValidAX25Frame(pkt_buff)) {
   /* Perform the callback. */
   rx_cb(frame_buffer, frame_size);
+  } else {
+#ifdef PKT_IS_TEST_PROJECT
+    dbgPrintf(DBG_INFO, "RX   > Invalid frame - dropped\r\n");
+#else
+    TRACE_INFO("RX   > Invalid frame - dropped");
+#endif
+  }
 }
 
 void Si446x_startDecoder(radio_freq_t freq, radio_squelch_t sq, void* cb) {