diff --git a/src/main.c b/src/main.c
index 62a8ba4..5912e26 100644
--- a/src/main.c
+++ b/src/main.c
@@ -83,6 +83,8 @@ static int check_reply(struct icmphdr *sent_hdr, struct icmphdr *recv_hdr, size_
         return 1;
     if (recv_hdr->type == 8)
         return 1;
+    if (recv_hdr->type != 0)
+        return 0;
     if ((size_t) recv_size != sent_size)
         return 1;
     return check_packet_conformity((char *)sent_hdr, (char *)recv_hdr, recv_size);