diff --git a/qrexec-lib/write-stdin.c b/qrexec-lib/write-stdin.c
index 40a18c1..3bd5922 100644
--- a/qrexec-lib/write-stdin.c
+++ b/qrexec-lib/write-stdin.c
@@ -131,5 +131,5 @@ int fork_and_flush_stdin(int fd, struct buffer *buffer)
 			close(i);
 	set_block(fd);
 	write_all(fd, buffer_data(buffer), buffer_len(buffer));
-	exit(0);
+	_exit(0);
 }