diff --git a/translate.c b/translate.c
index 71263fa..fc70f3d 100644
--- a/translate.c
+++ b/translate.c
@@ -245,6 +245,7 @@
                   const char *payload, size_t payload_size) {
   struct icmphdr *icmp_targ = out[pos].iov_base;
   uint8_t icmp_type;
+  int ttl;
   int clat_packet_len;
 
   memset(icmp_targ, 0, sizeof(struct icmphdr));