diff --git a/src/core/ipv4/icmp.c b/src/core/ipv4/icmp.c
index 6b523801..7a0eca39 100644
--- a/src/core/ipv4/icmp.c
+++ b/src/core/ipv4/icmp.c
@@ -137,7 +137,7 @@ icmp_dest_unreach(struct pbuf *p, enum icmp_dur_type t)
   struct ip_hdr *iphdr;
   struct icmp_dur_hdr *idur;
   
-  q = pbuf_alloc(PBUF_TRANSPORT, 8 + IP_HLEN + 8, PBUF_RAM);
+  q = pbuf_alloc(PBUF_IP, 8 + IP_HLEN + 8, PBUF_RAM);
   /* ICMP header + IP header + 8 bytes of data */
 
   iphdr = p->payload;
@@ -172,7 +172,7 @@ icmp_time_exceeded(struct pbuf *p, enum icmp_te_type t)
   struct ip_hdr *iphdr;
   struct icmp_te_hdr *tehdr;
 
-  q = pbuf_alloc(PBUF_TRANSPORT, 8 + IP_HLEN + 8, PBUF_RAM);
+  q = pbuf_alloc(PBUF_IP, 8 + IP_HLEN + 8, PBUF_RAM);
 
   iphdr = p->payload;
 #if ICMP_DEBUG
diff --git a/src/core/ipv6/icmp6.c b/src/core/ipv6/icmp6.c
index 47c993f1..2d210259 100644
--- a/src/core/ipv6/icmp6.c
+++ b/src/core/ipv6/icmp6.c
@@ -121,7 +121,7 @@ icmp_dest_unreach(struct pbuf *p, enum icmp_dur_type t)
   struct ip_hdr *iphdr;
   struct icmp_dur_hdr *idur;
   
-  q = pbuf_alloc(PBUF_TRANSPORT, 8 + IP_HLEN + 8, PBUF_RAM);
+  q = pbuf_alloc(PBUF_IP, 8 + IP_HLEN + 8, PBUF_RAM);
   /* ICMP header + IP header + 8 bytes of data */
 
   iphdr = p->payload;
@@ -153,7 +153,7 @@ icmp_time_exceeded(struct pbuf *p, enum icmp_te_type t)
 
   DEBUGF(ICMP_DEBUG, ("icmp_time_exceeded\n"));
   
-  q = pbuf_alloc(PBUF_TRANSPORT, 8 + IP_HLEN + 8, PBUF_RAM);
+  q = pbuf_alloc(PBUF_IP, 8 + IP_HLEN + 8, PBUF_RAM);
 
   iphdr = p->payload;