diff --git a/src/tls.c b/src/tls.c
index 31f3ba28..806295ab 100644
--- a/src/tls.c
+++ b/src/tls.c
@@ -2319,14 +2319,15 @@ void tls_cleanup(TLS_CONNECT *conn)
 
 int tls_set_socket(TLS_CONNECT *conn, tls_socket_t sock)
 {
-	int flags = 0;
 #ifdef WIN32
-    	if( ioctlsocket(sock, FIONBIO, (u_long*)&flags) != 0)   {
+	u_long flags = 0;
+    	if( ioctlsocket(sock, FIONBIO, &flags) != 0)   {
 		error_puts("socket in non-blocking mode");
 		//nginx will pass a socket in non-blocking mode
-		//return -1;
+		//return -1; // FIXME
 	}
 #else
+	int flags = 0;
 	if ((flags = fcntl(sock, F_GETFL)) == -1) {
 		error_print();
 		perror("fcntl error");
@@ -2335,7 +2336,7 @@ int tls_set_socket(TLS_CONNECT *conn, tls_socket_t sock)
 	if (flags & O_NONBLOCK) {
 		error_puts("socket in non-blocking mode");
 		//nginx will pass a socket in non-blocking mode
-		//return -1;
+		//return -1; // FIXME
 	}
 #endif
 	conn->sock = sock;