diff --git a/shared/n-dhcp4/src/n-dhcp4-socket.c b/shared/n-dhcp4/src/n-dhcp4-socket.c
index c7e8977..7291c78 100644
--- a/shared/n-dhcp4/src/n-dhcp4-socket.c
+++ b/shared/n-dhcp4/src/n-dhcp4-socket.c
@@ -50,8 +50,8 @@ int n_dhcp4_c_socket_packet_new(int *sockfdp, int ifindex) {
                 BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, IPPROTO_UDP, 1, 0),                                         /* IP protocol == UDP ? */
                 BPF_STMT(BPF_RET + BPF_K, 0),                                                                   /* ignore */
 
-                BPF_STMT(BPF_LD + BPF_B + BPF_ABS, offsetof(struct iphdr, frag_off)),                           /* A <- Flags */
-                BPF_STMT(BPF_ALU + BPF_AND + BPF_K, ntohs(IP_MF | IP_OFFMASK)),                                 /* A <- A & (IP_MF | IP_OFFMASK) */
+                BPF_STMT(BPF_LD + BPF_H + BPF_ABS, offsetof(struct iphdr, frag_off)),                           /* A <- Flags + Fragment offset */
+                BPF_STMT(BPF_ALU + BPF_AND + BPF_K, IP_MF | IP_OFFMASK),                                        /* A <- A & (IP_MF | IP_OFFMASK) */
                 BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, 0, 1, 0),                                                   /* fragmented packet ? */
                 BPF_STMT(BPF_RET + BPF_K, 0),                                                                   /* ignore */