diff --git a/openbsc/src/sccp/sccp.c b/openbsc/src/sccp/sccp.c
index 1259104..7630b1c 100644
--- a/openbsc/src/sccp/sccp.c
+++ b/openbsc/src/sccp/sccp.c
@@ -461,7 +461,7 @@
 	msgb->l3h = &udt->data[udt->variable_data];
 
 	if (msgb_l3len(msgb) !=  msgb->l3h[-1]) {
-		DEBUGP(DSCCP, "msgb is truncated %u %u\n",
+		DEBUGP(DSCCP, "msgb is truncated is: %u should: %u\n",
 			msgb_l3len(msgb), msgb->l3h[-1]);
 		return -1;
 	}