Index: uspace/srv/net/tcp/service.c
===================================================================
--- uspace/srv/net/tcp/service.c	(revision 3c7702c05cfce1577b9b1bb89cfe61f809c024db)
+++ uspace/srv/net/tcp/service.c	(revision cde999aca79219e8751af76502001a86d411d176)
@@ -433,5 +433,5 @@
  * @param rconn_id Place to store ID of new connection
  *
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 static int tcp_conn_create_impl(tcp_client_t *client, inet_ep2_t *epp,
@@ -507,5 +507,5 @@
  * @param rlst_id Place to store ID of new listener
  *
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
 */
 static int tcp_listener_create_impl(tcp_client_t *client, inet_ep_t *ep,
@@ -578,5 +578,5 @@
  * @param conn_id Connection ID
  *
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 static int tcp_conn_send_fin_impl(tcp_client_t *client, sysarg_t conn_id)
@@ -603,5 +603,5 @@
  * @param conn_id Connection ID
  *
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 static int tcp_conn_push_impl(tcp_client_t *client, sysarg_t conn_id)
@@ -628,5 +628,5 @@
  * @param conn_id Connection ID
  *
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 static int tcp_conn_reset_impl(tcp_client_t *client, sysarg_t conn_id)
@@ -654,5 +654,5 @@
  * @param size    Data size in bytes
  *
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 static int tcp_conn_send_impl(tcp_client_t *client, sysarg_t conn_id,
@@ -684,5 +684,5 @@
  * @param nrecv   Place to store actual number of bytes received
  *
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 static int tcp_conn_recv_impl(tcp_client_t *client, sysarg_t conn_id,
@@ -1244,5 +1244,5 @@
 /** Initialize TCP service.
  *
- * @return EOK on success or negative error code.
+ * @return EOK on success or an error code.
  */
 int tcp_service_init(void)
Index: uspace/srv/net/udp/service.c
===================================================================
--- uspace/srv/net/udp/service.c	(revision 3c7702c05cfce1577b9b1bb89cfe61f809c024db)
+++ uspace/srv/net/udp/service.c	(revision cde999aca79219e8751af76502001a86d411d176)
@@ -205,5 +205,5 @@
  * @param rassoc_id Place to store ID of new association
  *
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 static int udp_assoc_create_impl(udp_client_t *client, inet_ep2_t *epp,
@@ -305,5 +305,5 @@
  * @param size     Message size
  *
- * @return EOK on success or negative error code
+ * @return EOK on success or an error code
  */
 static int udp_assoc_send_msg_impl(udp_client_t *client, sysarg_t assoc_id,
@@ -750,5 +750,5 @@
 /** Initialize UDP service.
  *
- * @return EOK on success or negative error code.
+ * @return EOK on success or an error code.
  */
 int udp_service_init(void)