diff --git a/ospfd/ospf_packet.c b/ospfd/ospf_packet.c
index 9a8f1d6..117401c 100644
--- a/ospfd/ospf_packet.c
+++ b/ospfd/ospf_packet.c
@@ -2125,7 +2125,7 @@
   int ret;
   struct ip *iph;
   u_int16_t ip_len;
-  unsigned int ifindex = 0;
+  ifindex_t ifindex = 0;
   struct iovec iov;
   /* Header and data both require alignment. */
   char buff [CMSG_SPACE(SOPT_SIZE_CMSG_IFINDEX_IPV4())];