diff --git a/nixos/tests/fcitx5/default.nix b/nixos/tests/fcitx5/default.nix
index c113f2e2c052..feea621f6b5b 100644
--- a/nixos/tests/fcitx5/default.nix
+++ b/nixos/tests/fcitx5/default.nix
@@ -89,10 +89,13 @@ rec {
             machine.succeed("xauth merge ${xauth}")
             machine.sleep(5)
 
+            machine.wait_until_succeeds("pgrep fcitx5")
             machine.succeed("su - ${user.name} -c 'kill $(pgrep fcitx5)'")
             machine.sleep(1)
 
             machine.succeed("su - ${user.name} -c 'alacritty >&2 &'")
+            machine.wait_for_window("alice@machine")
+
             machine.succeed("su - ${user.name} -c 'fcitx5 >&2 &'")
             machine.sleep(10)