diff --git a/net/tcp/tcp.h b/net/tcp/tcp.h
index d2a9975050..716e9955fe 100644
--- a/net/tcp/tcp.h
+++ b/net/tcp/tcp.h
@@ -68,10 +68,10 @@
 #  define TCP_WBIOB(wrb)             ((wrb)->wb_iob)
 #  define TCP_WBCOPYOUT(wrb,dest,n)  (iob_copyout(dest,(wrb)->wb_iob,(n),0))
 #  define TCP_WBCOPYIN(wrb,src,n,off) \
-     (iob_copyin((wrb)->wb_iob,src,(n),(off),false,\
+     (iob_copyin((wrb)->wb_iob,src,(n),(off),true,\
                  IOBUSER_NET_TCP_WRITEBUFFER))
 #  define TCP_WBTRYCOPYIN(wrb,src,n,off) \
-     (iob_trycopyin((wrb)->wb_iob,src,(n),(off),false,\
+     (iob_trycopyin((wrb)->wb_iob,src,(n),(off),true,\
                     IOBUSER_NET_TCP_WRITEBUFFER))
 
 #  define TCP_WBTRIM(wrb,n) \
diff --git a/net/tcp/tcp_send_buffered.c b/net/tcp/tcp_send_buffered.c
index a8218d7922..5740ad4dbc 100644
--- a/net/tcp/tcp_send_buffered.c
+++ b/net/tcp/tcp_send_buffered.c
@@ -1309,7 +1309,7 @@ int psock_tcp_cansend(FAR struct socket *psock)
    * but we don't know how many more.
    */
 
-  if (tcp_wrbuffer_test() < 0 || iob_navail(false) <= 0)
+  if (tcp_wrbuffer_test() < 0 || iob_navail(true) <= 0)
     {
       return -EWOULDBLOCK;
     }
diff --git a/net/tcp/tcp_wrbuffer.c b/net/tcp/tcp_wrbuffer.c
index c93f7495e9..27d912144c 100644
--- a/net/tcp/tcp_wrbuffer.c
+++ b/net/tcp/tcp_wrbuffer.c
@@ -145,7 +145,7 @@ FAR struct tcp_wrbuffer_s *tcp_wrbuffer_alloc(void)
 
   /* Now get the first I/O buffer for the write buffer structure */
 
-  wrb->wb_iob = net_ioballoc(false, IOBUSER_NET_TCP_WRITEBUFFER);
+  wrb->wb_iob = net_ioballoc(true, IOBUSER_NET_TCP_WRITEBUFFER);
 
   /* Did we get an IOB?  We should always get one except under some really
    * weird error conditions.