diff --git a/src/vnet/ip/ip6_packet.h b/src/vnet/ip/ip6_packet.h
index b00eac7..e71604c 100644
--- a/src/vnet/ip/ip6_packet.h
+++ b/src/vnet/ip/ip6_packet.h
@@ -652,7 +652,7 @@
       i++;
       if (last)
 	break;
-      if (i > IP6_EXT_HDR_MAX)
+      if (i >= IP6_EXT_HDR_MAX)
 	break;
       next_header = ip6_ext_next_header_s (next_proto, next_header, max_offset,
 					   &offset, &next_proto, &last);