diff --git a/toxcore/TCP_client.c b/toxcore/TCP_client.c
index bc1b7ff4..2a2289b2 100644
--- a/toxcore/TCP_client.c
+++ b/toxcore/TCP_client.c
@@ -155,16 +155,16 @@ static int write_packet_TCP_secure_connection(TCP_Client_Connection *con, const
     if ((unsigned int)len != (sizeof(packet) - sizeof(uint16_t)))
         return -1;
 
-    increment_nonce(con->sent_nonce);
-
     len = send(con->sock, packet, sizeof(packet), MSG_NOSIGNAL);
 
-    if ((unsigned int)len == sizeof(packet))
-        return 1;
-
     if (len <= 0)
         return 0;
 
+    increment_nonce(con->sent_nonce);
+
+    if ((unsigned int)len == sizeof(packet))
+        return 1;
+
     memcpy(con->last_packet, packet, length);
     con->last_packet_length = sizeof(packet);
     con->last_packet_sent = len;
diff --git a/toxcore/TCP_server.c b/toxcore/TCP_server.c
index 7487ad4f..6c0133dd 100644
--- a/toxcore/TCP_server.c
+++ b/toxcore/TCP_server.c
@@ -335,16 +335,16 @@ static int write_packet_TCP_secure_connection(TCP_Secure_Connection *con, const
     if ((unsigned int)len != (sizeof(packet) - sizeof(uint16_t)))
         return -1;
 
-    increment_nonce(con->sent_nonce);
-
     len = send(con->sock, packet, sizeof(packet), MSG_NOSIGNAL);
 
-    if ((unsigned int)len == sizeof(packet))
-        return 1;
-
     if (len <= 0)
         return 0;
 
+    increment_nonce(con->sent_nonce);
+
+    if ((unsigned int)len == sizeof(packet))
+        return 1;
+
     memcpy(con->last_packet, packet, length);
     con->last_packet_length = sizeof(packet);
     con->last_packet_sent = len;