diff --git a/pimd/pim_sock.c b/pimd/pim_sock.c
index 2bb48f7..ceae4f2 100644
--- a/pimd/pim_sock.c
+++ b/pimd/pim_sock.c
@@ -180,7 +180,7 @@
 }
 
 int pim_socket_join(int fd, struct in_addr group,
-		    struct in_addr ifaddr, int ifindex)
+		    struct in_addr ifaddr, ifindex_t ifindex)
 {
   int ret;
 
@@ -228,7 +228,7 @@
   return ret;
 }
 
-int pim_socket_join_source(int fd, int ifindex,
+int pim_socket_join_source(int fd, ifindex_t ifindex,
 			   struct in_addr group_addr,
 			   struct in_addr source_addr,
 			   const char *ifname)
@@ -252,7 +252,7 @@
 int pim_socket_recvfromto(int fd, uint8_t *buf, size_t len,
 			  struct sockaddr_in *from, socklen_t *fromlen,
 			  struct sockaddr_in *to, socklen_t *tolen,
-			  int *ifindex)
+			  ifindex_t *ifindex)
 {
   struct msghdr msgh;
   struct cmsghdr *cmsg;