Index: uspace/lib/c/generic/net/socket_client.c
===================================================================
--- uspace/lib/c/generic/net/socket_client.c	(revision d08ba7fc117c3452bd836456d4e0d1fa6680849a)
+++ uspace/lib/c/generic/net/socket_client.c	(revision fdfa2e1855154495fa890446681a484e8d7e8122)
@@ -923,5 +923,5 @@
  *			message.
  */
-int send(int socket_id, void *data, size_t datalength, int flags)
+int send(int socket_id, const void *data, size_t datalength, int flags)
 {
 	/* Without the address */
Index: uspace/lib/c/include/net/socket.h
===================================================================
--- uspace/lib/c/include/net/socket.h	(revision d08ba7fc117c3452bd836456d4e0d1fa6680849a)
+++ uspace/lib/c/include/net/socket.h	(revision fdfa2e1855154495fa890446681a484e8d7e8122)
@@ -57,5 +57,5 @@
 extern int connect(int, const struct sockaddr *, socklen_t);
 extern int closesocket(int);
-extern int send(int, void *, size_t, int);
+extern int send(int, const void *, size_t, int);
 extern int sendto(int, const void *, size_t, int, const struct sockaddr *,
     socklen_t);