diff --git a/gst/udp/gstudpsrc.c b/gst/udp/gstudpsrc.c
index efa2095292..dcd99ba202 100644
--- a/gst/udp/gstudpsrc.c
+++ b/gst/udp/gstudpsrc.c
@@ -285,7 +285,7 @@ gst_ipv6_pktinfo_message_deserialize (gint level,
   if (level != IPPROTO_IPV6 || type != IPV6_PKTINFO)
     return NULL;
 
-  if (size < sizeof (struct in_pktinfo))
+  if (size < sizeof (struct in6_pktinfo))
     return NULL;
 
   pktinfo = data;