Index: uspace/lib/c/include/net/packet_header.h
===================================================================
--- uspace/lib/c/include/net/packet_header.h	(revision 1bfd3d3b2991b8f2df4cff87d9723059528b9bd1)
+++ uspace/lib/c/include/net/packet_header.h	(revision 79ae36ddc409577eb0da3750b3a7280e034566a2)
@@ -128,5 +128,5 @@
  * @return		False otherwise.
  */
-static inline int packet_is_valid(const packet_t packet)
+static inline int packet_is_valid(const packet_t *packet)
 {
 	return packet && (packet->magic_value == PACKET_MAGIC_VALUE);