diff --git a/net/usrsock/usrsock_bind.c b/net/usrsock/usrsock_bind.c
index f6b2869384..6a15930b5d 100644
--- a/net/usrsock/usrsock_bind.c
+++ b/net/usrsock/usrsock_bind.c
@@ -154,7 +154,7 @@ int usrsock_bind(FAR struct socket *psock,
   {
   };
 
-  ssize_t ret;
+  int ret;
 
   DEBUGASSERT(conn);
 
diff --git a/net/usrsock/usrsock_dev.c b/net/usrsock/usrsock_dev.c
index ad050ee32a..443386decf 100644
--- a/net/usrsock/usrsock_dev.c
+++ b/net/usrsock/usrsock_dev.c
@@ -485,7 +485,7 @@ static ssize_t usrsockdev_handle_event(FAR struct usrsockdev_s *dev,
 
         if (len < sizeof(*hdr))
           {
-            nwarn("message too short, %d < %d.\n", len, sizeof(*hdr));
+            nwarn("message too short, %zu < %zu.\n", len, sizeof(*hdr));
 
             return -EINVAL;
           }
@@ -654,7 +654,7 @@ usrsockdev_handle_datareq_response(FAR struct usrsockdev_s *dev,
 
   if (conn->resp.datain.iov[iovpos].iov_len < datahdr->valuelen)
     {
-      nwarn("%dth buffer not large enough (need: %d, have: %d).\n",
+      nwarn("%dth buffer not large enough (need: %d, have: %zu).\n",
             iovpos,
             datahdr->valuelen,
             conn->resp.datain.iov[iovpos].iov_len);
@@ -676,7 +676,7 @@ usrsockdev_handle_datareq_response(FAR struct usrsockdev_s *dev,
       if (conn->resp.datain.iov[iovpos].iov_len < hdr->result)
         {
           nwarn("%dth buffer not large enough "
-                "(need: %" PRId32 ", have: %d).\n",
+                "(need: %" PRId32 ", have: %zu).\n",
                 iovpos,
                 hdr->result,
                 conn->resp.datain.iov[iovpos].iov_len);
@@ -742,7 +742,7 @@ static ssize_t usrsockdev_handle_req_response(FAR struct usrsockdev_s *dev,
 
   if (len < hdrlen)
     {
-      nwarn("message too short, %d < %d.\n", len, hdrlen);
+      nwarn("message too short, %zu < %u.\n", len, hdrlen);
 
       return -EINVAL;
     }
@@ -855,7 +855,7 @@ static ssize_t usrsockdev_write(FAR struct file *filep,
 
       if (len < sizeof(struct usrsock_message_common_s))
         {
-          nwarn("message too short, %d < %d.\n", len,
+          nwarn("message too short, %zu < %zu.\n", len,
                 sizeof(struct usrsock_message_common_s));
 
           ret = -EINVAL;
diff --git a/net/usrsock/usrsock_getpeername.c b/net/usrsock/usrsock_getpeername.c
index 7cc01bd171..3fafe929cd 100644
--- a/net/usrsock/usrsock_getpeername.c
+++ b/net/usrsock/usrsock_getpeername.c
@@ -162,8 +162,8 @@ int usrsock_getpeername(FAR struct socket *psock,
   };
 
   struct iovec inbufs[1];
-  ssize_t ret;
   socklen_t outaddrlen = 0;
+  int ret;
 
   net_lock();
 
diff --git a/net/usrsock/usrsock_getsockname.c b/net/usrsock/usrsock_getsockname.c
index 1f61d7ba94..10f3f65f99 100644
--- a/net/usrsock/usrsock_getsockname.c
+++ b/net/usrsock/usrsock_getsockname.c
@@ -162,8 +162,8 @@ int usrsock_getsockname(FAR struct socket *psock,
   };
 
   struct iovec inbufs[1];
-  ssize_t ret;
   socklen_t outaddrlen = 0;
+  int ret;
 
   net_lock();
 
diff --git a/net/usrsock/usrsock_getsockopt.c b/net/usrsock/usrsock_getsockopt.c
index 5126ca8011..3e23efeccf 100644
--- a/net/usrsock/usrsock_getsockopt.c
+++ b/net/usrsock/usrsock_getsockopt.c
@@ -178,7 +178,7 @@ int usrsock_getsockopt(FAR struct usrsock_conn_s *conn,
   };
 
   struct iovec inbufs[1];
-  ssize_t ret;
+  int ret;
 
   net_lock();
 
diff --git a/net/usrsock/usrsock_recvmsg.c b/net/usrsock/usrsock_recvmsg.c
index d865742807..980e349330 100644
--- a/net/usrsock/usrsock_recvmsg.c
+++ b/net/usrsock/usrsock_recvmsg.c
@@ -318,7 +318,7 @@ ssize_t usrsock_recvmsg(FAR struct socket *psock, FAR struct msghdr *msg,
               USRSOCK_EVENT_REMOTE_CLOSED);
           if (ret < 0)
             {
-              nwarn("usrsock_setup_request_callback failed: %d\n", ret);
+              nwarn("usrsock_setup_request_callback failed: %zd\n", ret);
               goto errout_unlock;
             }
 
@@ -340,7 +340,7 @@ ssize_t usrsock_recvmsg(FAR struct socket *psock, FAR struct msghdr *msg,
                 }
               else
                 {
-                  nerr("net_timedwait errno: %d\n", ret);
+                  nerr("net_timedwait errno: %zd\n", ret);
                   DEBUGASSERT(false);
                 }
             }
@@ -381,7 +381,7 @@ ssize_t usrsock_recvmsg(FAR struct socket *psock, FAR struct msghdr *msg,
           USRSOCK_EVENT_ABORT | USRSOCK_EVENT_REQ_COMPLETE);
       if (ret < 0)
         {
-          nwarn("usrsock_setup_request_callback failed: %d\n", ret);
+          nwarn("usrsock_setup_request_callback failed: %zd\n", ret);
           goto errout_unlock;
         }
 
diff --git a/net/usrsock/usrsock_sendmsg.c b/net/usrsock/usrsock_sendmsg.c
index 8d9245a160..332817e38a 100644
--- a/net/usrsock/usrsock_sendmsg.c
+++ b/net/usrsock/usrsock_sendmsg.c
@@ -299,7 +299,7 @@ ssize_t usrsock_sendmsg(FAR struct socket *psock,
                                                USRSOCK_EVENT_REMOTE_CLOSED);
           if (ret < 0)
             {
-              nwarn("usrsock_setup_request_callback failed: %d\n", ret);
+              nwarn("usrsock_setup_request_callback failed: %zd\n", ret);
               goto errout_unlock;
             }
 
@@ -321,7 +321,7 @@ ssize_t usrsock_sendmsg(FAR struct socket *psock,
                 }
               else
                 {
-                  nerr("net_timedwait errno: %d\n", ret);
+                  nerr("net_timedwait errno: %zd\n", ret);
                   DEBUGASSERT(false);
                 }
             }
@@ -361,7 +361,7 @@ ssize_t usrsock_sendmsg(FAR struct socket *psock,
                                            USRSOCK_EVENT_REQ_COMPLETE);
       if (ret < 0)
         {
-          nwarn("usrsock_setup_request_callback failed: %d\n", ret);
+          nwarn("usrsock_setup_request_callback failed: %zd\n", ret);
           goto errout_unlock;
         }
 
diff --git a/net/usrsock/usrsock_setsockopt.c b/net/usrsock/usrsock_setsockopt.c
index dad69633ba..38788c5e7c 100644
--- a/net/usrsock/usrsock_setsockopt.c
+++ b/net/usrsock/usrsock_setsockopt.c
@@ -166,7 +166,7 @@ int usrsock_setsockopt(FAR struct usrsock_conn_s *conn,
   {
   };
 
-  ssize_t ret;
+  int ret;
 
   DEBUGASSERT(conn);