diff --git a/core/net/packetbuf.c b/core/net/packetbuf.c
index 4869263cf..0affa0ff2 100644
--- a/core/net/packetbuf.c
+++ b/core/net/packetbuf.c
@@ -196,7 +196,7 @@ packetbuf_attr_clear(void)
 /*---------------------------------------------------------------------------*/
 void
 packetbuf_attr_copyto(struct packetbuf_attr *attrs,
-		    struct packetbuf_addr *addrs)
+                      struct packetbuf_addr *addrs)
 {
   memcpy(attrs, packetbuf_attrs, sizeof(packetbuf_attrs));
   memcpy(addrs, packetbuf_addrs, sizeof(packetbuf_addrs));
@@ -204,7 +204,7 @@ packetbuf_attr_copyto(struct packetbuf_attr *attrs,
 /*---------------------------------------------------------------------------*/
 void
 packetbuf_attr_copyfrom(struct packetbuf_attr *attrs,
-		      struct packetbuf_addr *addrs)
+                        struct packetbuf_addr *addrs)
 {
   memcpy(packetbuf_attrs, attrs, sizeof(packetbuf_attrs));
   memcpy(packetbuf_addrs, addrs, sizeof(packetbuf_addrs));