diff --git a/toxcore/TCP_common.c b/toxcore/TCP_common.c
index 5f3a1791..a42faced 100644
--- a/toxcore/TCP_common.c
+++ b/toxcore/TCP_common.c
@@ -278,7 +278,7 @@ int read_packet_TCP_secure_connection(
         return -1;
     }
 
-    VLA(uint8_t, data_encrypted, *next_packet_length);
+    VLA(uint8_t, data_encrypted, (int) *next_packet_length);
     const int len_packet = read_TCP_packet(logger, ns, sock, data_encrypted, *next_packet_length, ip_port);
 
     if (len_packet == -1) {