Index: uspace/lib/c/generic/net/socket_client.c
===================================================================
--- uspace/lib/c/generic/net/socket_client.c	(revision 561c3012aae7985e9514e586dff80f6d531853c2)
+++ uspace/lib/c/generic/net/socket_client.c	(revision fada53f4d09acb482f1a81883a0cf0fd893f9b47)
@@ -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 561c3012aae7985e9514e586dff80f6d531853c2)
+++ uspace/lib/c/include/net/socket.h	(revision fada53f4d09acb482f1a81883a0cf0fd893f9b47)
@@ -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);