diff --git a/src/decode-ipv4.c b/src/decode-ipv4.c
index d072058b40..103164a9f6 100644
--- a/src/decode-ipv4.c
+++ b/src/decode-ipv4.c
@@ -551,7 +551,7 @@ void DecodeIPV4(ThreadVars *tv, DecodeThreadVars *dtv, Packet *p, uint8_t *pkt,
 #endif /* DEBUG */
 
     /* check what next decoder to invoke */
-    switch (IPV4_GET_IPPROTO(p)) {
+    switch (p->proto = IPV4_GET_IPPROTO(p)) {
         case IPPROTO_TCP:
             DecodeTCP(tv, dtv, p, pkt + IPV4_GET_HLEN(p),
                       IPV4_GET_IPLEN(p) - IPV4_GET_HLEN(p), pq);