diff --git a/scripts/check-probe-matches-compose.py b/scripts/check-probe-matches-compose.py
index 7ab63f7..eaa8a2f 100644
--- a/scripts/check-probe-matches-compose.py
+++ b/scripts/check-probe-matches-compose.py
@@ -340,6 +340,9 @@ def main(argv):
     for a in argv:
         if a.startswith("--root="):
             set_root(a[len("--root="):])
+    # `--all` is what catalog_gates.py passes for hidden/abandoned apps; this gate already judges every directory, so it
+    # is a no-op here (refusing it made `catalog_gates.py --all` read INCONCLUSIVE on a clean tree, 2026-10-05).
+    argv = [a for a in argv if a != "--all"]
     unknown = [a for a in argv if a.startswith("-") and not a.startswith("--root=")]
     if unknown:
         print("unknown option(s): %s" % " ".join(unknown))