diff --git a/example/diagnose_ks.py b/example/diagnose_ks.py
index 60aaae1..a94a71f 100644
--- a/example/diagnose_ks.py
+++ b/example/diagnose_ks.py
@@ -37,8 +37,11 @@ def resolve_reference_glob(base_dir: Path, ref_arg: str):
         data_glob = cfg.get("data_glob") or cfg.get("data_path") or ""
         if not data_glob:
             raise SystemExit("reference config has no data_glob/data_path")
-        ref_path = (ref_path.parent / data_glob).resolve()
-        return str(ref_path)
+        combined = ref_path.parent / data_glob
+        # On Windows, Path.resolve fails on glob patterns like *.csv.gz
+        if "*" in str(combined) or "?" in str(combined):
+            return str(combined)
+        return str(combined.resolve())
     return str(ref_path)