1 files changed, 1 insertions, 1 deletions

diff --git a/networking/udhcp/arpping.h b/networking/udhcp/arpping.h
index 6f27d9f75..30959ca99 100644
--- a/networking/udhcp/arpping.h
+++ b/networking/udhcp/arpping.h
@@ -27,7 +27,7 @@ struct arpMsg {
         uint8_t  tHaddr[6];                     /* target's hardware address */
         uint8_t  tInaddr[4];                    /* target's IP address */
         uint8_t  pad[18];                       /* pad for min. Ethernet payload (60 bytes) */
-} __attribute__ ((packed));
+} ATTRIBUTE_PACKED;
 
 /* function prototypes */
 int arpping(uint32_t yiaddr, uint32_t ip, uint8_t *arp, char *interface);