diff --git a/ext/ftp/ftp.c b/ext/ftp/ftp.c
index f9c61748efdd..05e49ee97a84 100644
--- a/ext/ftp/ftp.c
+++ b/ext/ftp/ftp.c
@@ -1314,13 +1314,14 @@ static ssize_t my_recv_wrapper_with_restart(php_socket_t fd, void *buf, size_t s
 	return n;
 }
 
-static int single_send(ftpbuf_t *ftp, php_socket_t s, void *buf, size_t size) {
+static ssize_t single_send(ftpbuf_t *ftp, php_socket_t s, void *buf, size_t size) {
 #ifdef HAVE_FTP_SSL
 	int err;
 	bool retry = false;
 	SSL *handle = NULL;
 	php_socket_t fd;
 	size_t sent;
+	int ret;
 
 	if (ftp->use_ssl && ftp->fd == s && ftp->ssl_active) {
 		handle = ftp->ssl_handle;
@@ -1333,8 +1334,8 @@ static int single_send(ftpbuf_t *ftp, php_socket_t s, void *buf, size_t size) {
 	}
 
 	do {
-		sent = SSL_write(handle, buf, size);
-		err = SSL_get_error(handle, sent);
+		ret = SSL_write_ex(handle, buf, size, &sent);
+		err = SSL_get_error(handle, ret);
 
 		switch (err) {
 			case SSL_ERROR_NONE:
@@ -1343,6 +1344,7 @@ static int single_send(ftpbuf_t *ftp, php_socket_t s, void *buf, size_t size) {
 
 			case SSL_ERROR_ZERO_RETURN:
 				retry = false;
+				sent = 0;
 				SSL_shutdown(handle);
 				break;