diff --git a/net/tcp/tcp_sendfile.c b/net/tcp/tcp_sendfile.c
index 78c61a193a1..8c84334b520 100644
--- a/net/tcp/tcp_sendfile.c
+++ b/net/tcp/tcp_sendfile.c
@@ -152,7 +152,7 @@ static uint16_t ack_eventhandler(FAR struct net_driver_s *dev,
        */
 
       pstate->snd_acked = tcp_getsequence(tcp->ackno) - pstate->snd_isn;
-      ninfo("ACK: acked=%d sent=%zd flen=%zu\n",
+      ninfo("ACK: acked=%" PRId32 " sent=%zd flen=%zu\n",
             pstate->snd_acked, pstate->snd_sent, pstate->snd_flen);
 
       dev->d_sndlen = 0;
@@ -275,7 +275,7 @@ static uint16_t sendfile_eventhandler(FAR struct net_driver_s *dev,
       return flags;
     }
 
-  ninfo("flags: %04x acked: %d sent: %zd\n",
+  ninfo("flags: %04x acked: %" PRId32 " sent: %zd\n",
         flags, pstate->snd_acked, pstate->snd_sent);
 
   /* We get here if (1) not all of the data has been ACKed, (2) we have been
@@ -343,7 +343,8 @@ static uint16_t sendfile_eventhandler(FAR struct net_driver_s *dev,
           /* Update the amount of data sent (but not necessarily ACKed) */
 
           pstate->snd_sent += sndlen;
-          ninfo("pid: %d SEND: acked=%d sent=%zd flen=%zu\n", getpid(),
+          ninfo("pid: %d SEND: acked=%" PRId32 " sent=%zd flen=%zu\n",
+                getpid(),
                 pstate->snd_acked, pstate->snd_sent, pstate->snd_flen);
         }
       else