diff --git a/test/simple-xinit.c b/test/simple-xinit.c
index 39daf54c96..c35b2af7bc 100644
--- a/test/simple-xinit.c
+++ b/test/simple-xinit.c
@@ -66,7 +66,7 @@ static const char *server_dead = "server_dead";
 static void
 handle_sigchld(int sig)
 {
-    write(server_displayfd, server_dead, strlen(server_dead));
+    (void)write(server_displayfd, server_dead, strlen(server_dead));
 }
 
 /* Starts the X server, returning its pid. */