diff --git a/tests/test_xfel_calibrate/conftest.py b/tests/test_xfel_calibrate/conftest.py
index 38e62b9e6f2b13f3e38b8a8ac93ddf145df809b8..85f0922c9d07ee814dc517045465ba172504f474 100644
--- a/tests/test_xfel_calibrate/conftest.py
+++ b/tests/test_xfel_calibrate/conftest.py
@@ -41,7 +41,7 @@ class FakeProcessCalibrate(FakeProcess):
         )
 
         #  This is needed for the `requires-caldb` checks, which ping a server
-        self.pass_command("ping")
+        self.pass_command(["ping", self.any()])
 
         #  For the version insertion...
         self.register_subprocess(