Index: uspace/lib/c/include/net/packet.h
===================================================================
--- uspace/lib/c/include/net/packet.h	(revision 00d7e1bfe06501df61aed156666d5597397d910a)
+++ uspace/lib/c/include/net/packet.h	(revision 2fc487fc6ac83f75fe56ab85a74d3c13b2bdae55)
@@ -38,8 +38,10 @@
 #define LIBC_PACKET_H_
 
+#include <sys/types.h>
+
 /** Packet identifier type.
  * Value zero is used as an invalid identifier.
  */
-typedef unsigned long packet_id_t;
+typedef sysarg_t packet_id_t;
 
 /** Type definition of the packet.
@@ -51,5 +53,5 @@
  * @see packet_dimension
  */
-typedef struct packet_dimension	packet_dimension_t;
+typedef struct packet_dimension packet_dimension_t;
 
 /** Packet dimension. */