diff --git a/net/tcp/tcp_recvwindow.c b/net/tcp/tcp_recvwindow.c
index 065f368c19..4929e797ee 100644
--- a/net/tcp/tcp_recvwindow.c
+++ b/net/tcp/tcp_recvwindow.c
@@ -152,9 +152,9 @@ uint16_t tcp_get_recvwindow(FAR struct net_driver_s *dev)
        */
 
       rwnd = (navail * CONFIG_IOB_BUFSIZE) + mss;
-      if (rwnd > INT16_MAX)
+      if (rwnd > UINT16_MAX)
         {
-          rwnd = INT16_MAX;
+          rwnd = UINT16_MAX;
         }
 
       /* Save the new receive window size */