diff --git a/android_app/app/src/main/cpp/tcp.c b/android_app/app/src/main/cpp/tcp.c
index c9760f1..dee35c7 100644
--- a/android_app/app/src/main/cpp/tcp.c
+++ b/android_app/app/src/main/cpp/tcp.c
@@ -730,7 +730,7 @@ jboolean handle_tcp(const struct arguments *args,
                 }
             }
             if (cur->tcp.connect_sent == TCP_CONNECT_NOT_SENT) {
-                if (len > 0) {
+                if (len > 0 && datalen > 0) {
                     char buffer[512];
                     sprintf(buffer, "CONNECT %s:443 HTTP/1.0\r\n\r\n", cur->tcp.hostname);