diff --git a/openbsc/src/utils/rs232.c b/openbsc/src/utils/rs232.c
index b322e8a..4e35cb0 100644
--- a/openbsc/src/utils/rs232.c
+++ b/openbsc/src/utils/rs232.c
@@ -100,7 +100,7 @@
 		return 0;
 	}
 
-	DEBUGP(DMI, "RS232 TX: %s\n", hexdump(msg->data, msg->len));
+	DEBUGP(DMI, "RS232 TX: %s\n", osmo_hexdump(msg->data, msg->len));
 
 	/* send over serial line */
 	written = write(bfd->fd, msg->data, msg->len);
@@ -173,7 +173,7 @@
 			if (msg->len > LAPD_HDR_LEN)
 				msg->l2h = msg->data + LAPD_HDR_LEN;
 
-			DEBUGP(DMI, "RS232 RX: %s\n", hexdump(msg->data, msg->len));
+			DEBUGP(DMI, "RS232 RX: %s\n", osmo_hexdump(msg->data, msg->len));
 			rc = handle_serial_msg(msg);
 		}
 	}