Index: uspace/lib/c/generic/inet/tcp.c
===================================================================
--- uspace/lib/c/generic/inet/tcp.c	(revision d5c1051faf4391647834d99babdd4a44ee5d9700)
+++ uspace/lib/c/generic/inet/tcp.c	(revision 84a1a546f62a2ba0f913f8f1bfce8d4bc68d7aa4)
@@ -59,5 +59,5 @@
  *
  * @param tcp TCP service
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 static int tcp_callback_create(tcp_t *tcp)
@@ -205,5 +205,5 @@
  * @param rconn Place to store pointer to new connection
  *
- * @return EOK on success or negative error code.
+ * @return EOK on success or an error code.
  */
 int tcp_conn_create(tcp_t *tcp, inet_ep2_t *epp, tcp_cb_t *cb, void *arg,
@@ -316,5 +316,5 @@
  * @param rlst Place to store pointer to new listener
  *
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 int tcp_listener_create(tcp_t *tcp, inet_ep_t *ep, tcp_listen_cb_t *lcb,
@@ -446,5 +446,5 @@
  * @param bytes Data size in bytes
  *
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 int tcp_conn_send(tcp_conn_t *conn, const void *data, size_t bytes)
@@ -478,5 +478,5 @@
  *
  * @param conn Connection
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 int tcp_conn_send_fin(tcp_conn_t *conn)
@@ -494,5 +494,5 @@
  *
  * @param conn Connection
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 int tcp_conn_push(tcp_conn_t *conn)
@@ -510,5 +510,5 @@
  *
  * @param conn Connection
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 int tcp_conn_reset(tcp_conn_t *conn)
@@ -538,5 +538,5 @@
  *
  * @return EOK on success, EAGAIN if no received data is pending, or other
- *         negative error code in case of other error
+ *         error code in case of other error
  */
 int tcp_conn_recv(tcp_conn_t *conn, void *buf, size_t bsize, size_t *nrecv)
@@ -586,5 +586,5 @@
  * @param nrecv Place to store actual number of received bytes
  *
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 int tcp_conn_recv_wait(tcp_conn_t *conn, void *buf, size_t bsize,
Index: uspace/lib/c/generic/inet/udp.c
===================================================================
--- uspace/lib/c/generic/inet/udp.c	(revision d5c1051faf4391647834d99babdd4a44ee5d9700)
+++ uspace/lib/c/generic/inet/udp.c	(revision 84a1a546f62a2ba0f913f8f1bfce8d4bc68d7aa4)
@@ -46,5 +46,5 @@
  *
  * @param udp UDP service
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 static int udp_callback_create(udp_t *udp)
@@ -158,5 +158,5 @@
  * @param rassoc Place to store pointer to new association
  *
- * @return EOK on success or negative error code.
+ * @return EOK on success or an error code.
  */
 int udp_assoc_create(udp_t *udp, inet_ep2_t *epp, udp_cb_t *cb, void *arg,
@@ -250,5 +250,5 @@
  * @param bytes Message size in bytes
  *
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 int udp_assoc_send_msg(udp_assoc_t *assoc, inet_ep_t *dest, void *data,
@@ -316,5 +316,5 @@
  * @param bsize Buffer size
  *
- * @return EOK on success or negative error code.
+ * @return EOK on success or an error code.
  */
 int udp_rmsg_read(udp_rmsg_t *rmsg, size_t off, void *buf, size_t bsize)
@@ -380,5 +380,5 @@
  * @param rmsg Place to store message information
  *
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 static int udp_rmsg_info(udp_t *udp, udp_rmsg_t *rmsg)
@@ -413,5 +413,5 @@
  *
  * @param udp UDP client
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 static int udp_rmsg_discard(udp_t *udp)