diff --git a/include/nuttx/net/tcp.h b/include/nuttx/net/tcp.h
index 5b25e7a3bba..3b62d4a29e7 100644
--- a/include/nuttx/net/tcp.h
+++ b/include/nuttx/net/tcp.h
@@ -472,19 +472,6 @@ int tcp_backlogdelete(FAR struct tcp_conn_s *conn,
 #  define tcp_backlogremove(conn)      (NULL)
 #endif
 
-/* Restart the current connection, if is has previously been stopped
- * with uip_stop().
- *
- * This function will open the receiver's window again so that we start
- * receiving data for the current connection.
- */
-
-#define uip_restart(conn,f) \
-  do { \
-    (f) |= UIP_NEWDATA; \
-    (conn)->tcpstateflags &= ~UIP_STOPPED; \
-  } while (0)
-
 /* Get the current maximum segment size that can be sent on the current
  * TCP connection.
  */
diff --git a/net/tcp/tcp_input.c b/net/tcp/tcp_input.c
index 8d54b1b18dc..49455febc37 100644
--- a/net/tcp/tcp_input.c
+++ b/net/tcp/tcp_input.c
@@ -674,7 +674,7 @@ found:
 
         /* If d_len > 0 we have TCP data in the packet, and we flag this
          * by setting the UIP_NEWDATA flag. If the application has stopped
-         * the data flow using uip_stop(), we must not accept any data
+         * the data flow using UIP_STOPPED, we must not accept any data
          * packets from the remote host.
          */
 
diff --git a/net/tcp/tcp_send.c b/net/tcp/tcp_send.c
index d9873818e26..4e84d667d69 100644
--- a/net/tcp/tcp_send.c
+++ b/net/tcp/tcp_send.c
@@ -190,7 +190,7 @@ static void tcp_sendcommon(FAR struct net_driver_s *dev,
 
   if (conn->tcpstateflags & UIP_STOPPED)
     {
-      /* If the connection has issued uip_stop(), we advertise a zero
+      /* If the connection has issued UIP_STOPPED, we advertise a zero
        * window so that the remote host will stop sending data.
        */