diff --git a/drivers/cc110x/gnrc_cc110x/gnrc_cc110x.c b/drivers/cc110x/gnrc_cc110x/gnrc_cc110x.c
index d7432196de..e61239f3a7 100644
--- a/drivers/cc110x/gnrc_cc110x/gnrc_cc110x.c
+++ b/drivers/cc110x/gnrc_cc110x/gnrc_cc110x.c
@@ -99,7 +99,7 @@ static int _send(gnrc_netif_t *netif, gnrc_pktsnip_t *pkt)
 
     cc110x_pkt.length = (uint8_t) payload_len + CC110X_HEADER_LENGTH;
 
-    DEBUG("gnrc_cc110x: sending packet from %u to %u with payload "
+    DEBUG("gnrc_cc110x: sending packet from %02x to %02x with payload "
             "length %u\n",
             (unsigned)cc110x_pkt.phy_src,
             (unsigned)cc110x_pkt.address,