diff --git a/plugins/updater/tests/app-updater/tests/update.rs b/plugins/updater/tests/app-updater/tests/update.rs
index 9d0c66c4..5821d5ad 100644
--- a/plugins/updater/tests/app-updater/tests/update.rs
+++ b/plugins/updater/tests/app-updater/tests/update.rs
@@ -148,7 +148,7 @@ fn test_update(app: &Path, update_bundle: PathBuf, signature: PathBuf, target: &
     #[cfg(target_os = "linux")]
     let mut app_cmd = if std::env::var("CI").map(|v| v == "true").unwrap_or_default() {
         app_cmd = Command::new("xvfb-run");
-        app_cmd.arg().arg("--auto-servernum").arg(app);
+        app_cmd.arg("--auto-servernum").arg(app);
     };
     app_cmd.env("TARGET", target);
     let output = app_cmd.output().expect("failed to run app");