diff --git a/ctdb/tcp/tcp_io.c b/ctdb/tcp/tcp_io.c
index e90770ec73c..c5e3340b530 100644
--- a/ctdb/tcp/tcp_io.c
+++ b/ctdb/tcp/tcp_io.c
@@ -85,5 +85,12 @@ int ctdb_tcp_queue_pkt(struct ctdb_node *node, uint8_t *data, uint32_t length)
 {
 	struct ctdb_tcp_node *tnode = talloc_get_type(node->private_data,
 						      struct ctdb_tcp_node);
+	struct ctdb_req_header *hdr = (struct ctdb_req_header *)data;
+
+	if (length & (CTDB_TCP_ALIGNMENT-1)) {
+		DEBUG(0,(__location__ " Length 0x%x not multiple of alignment op %d\n", 
+			 length, hdr->operation));
+	}
+
 	return ctdb_queue_send(tnode->queue, data, length);
 }