diff --git a/src/core/ipv4/ip.c b/src/core/ipv4/ip.c
index 8e1a8370..73b66db9 100644
--- a/src/core/ipv4/ip.c
+++ b/src/core/ipv4/ip.c
@@ -543,8 +543,6 @@ ip_input(struct pbuf *p, struct netif *inp)
   if (raw_input(p, inp) == 0)
 #endif /* LWIP_RAW */
   {
-    pbuf_header(p, -iphdr_hlen); /* Move to payload, no check necessary. */
-
     switch (IPH_PROTO(iphdr)) {
 #if LWIP_UDP
     case IP_PROTO_UDP:
@@ -577,7 +575,6 @@ ip_input(struct pbuf *p, struct netif *inp)
       /* send ICMP destination protocol unreachable unless is was a broadcast */
       if (!ip_addr_isbroadcast(&current_iphdr_dest, inp) &&
           !ip_addr_ismulticast(&current_iphdr_dest)) {
-        pbuf_header(p, iphdr_hlen); /* Move to ip header, no check necessary. */
         p->payload = iphdr;
         icmp_dest_unreach(p, ICMP_DUR_PROTO);
       }
diff --git a/src/core/tcp_in.c b/src/core/tcp_in.c
index bb1c5af4..02970379 100644
--- a/src/core/tcp_in.c
+++ b/src/core/tcp_in.c
@@ -411,6 +411,7 @@ aborted:
 
   LWIP_ASSERT("tcp_input: tcp_pcbs_sane()", tcp_pcbs_sane());
   PERF_STOP("tcp_input");
+  return;
 dropped:
   TCP_STATS_INC(tcp.drop);
   snmp_inc_tcpinerrs();