diff --git a/src/etcp.c b/src/etcp.c
index 9b42e73..197c74f 100644
--- a/src/etcp.c
+++ b/src/etcp.c
@@ -999,6 +999,8 @@ void etcp_conn_input(struct ETCP_DGRAM* pkt) {
     uint16_t len = pkt->data_len;
     uint16_t ts = pkt->timestamp;  // Received timestamp
 
+    DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "[%s] RX pkt", etcp->log_name);
+
     while (len >= 1) {
         uint8_t type = data[0];
 
@@ -1162,7 +1164,7 @@ void etcp_conn_input(struct ETCP_DGRAM* pkt) {
                     } else {
                         DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "[%s] RX dup: seq=%u need=%u asm_len=%d", etcp->log_name, seq, etcp->last_delivered_id+1, etcp->recv_q->count);
                         }
-                }
+                } else DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "payload len %d < 5", len);
                 len=0;
                 break;
             }