diff --git a/pimd/pim_ssmpingd.c b/pimd/pim_ssmpingd.c
index d564bf5..fe88eba 100644
--- a/pimd/pim_ssmpingd.c
+++ b/pimd/pim_ssmpingd.c
@@ -250,7 +250,7 @@
   struct sockaddr_in to;
   socklen_t fromlen = sizeof(from);
   socklen_t tolen = sizeof(to);
-  int ifindex = -1;
+  ifindex_t ifindex = -1;
   uint8_t buf[1000];
   int len;