1 files changed, 2 insertions, 1 deletions

diff --git a/networking/traceroute.c b/networking/traceroute.c
index c18fba8d0..82bb0118c 100644
--- a/networking/traceroute.c
+++ b/networking/traceroute.c
@@ -751,7 +751,8 @@ print(int read_len, const struct sockaddr *from, const struct sockaddr *to)
                 } else
 #endif
                 {
-                        read_len -= ((struct ip*)recv_pkt)->ip_hl << 2;
+                        struct ip *ip4packet = (struct ip*)recv_pkt;
+                        read_len -= ip4packet->ip_hl << 2;
                 }
                 printf(" %d bytes to %s", read_len, ina);
                 free(ina);