diff --git a/swh/lister/nixguix/lister.py b/swh/lister/nixguix/lister.py
--- a/swh/lister/nixguix/lister.py
+++ b/swh/lister/nixguix/lister.py
@@ -22,7 +22,7 @@
 from pathlib import Path
 import random
 from typing import Any, Dict, Iterator, List, Optional, Tuple, Union
-from urllib.parse import urlparse
+from urllib.parse import parse_qsl, urlparse
 
 import requests
 from requests.exceptions import ConnectionError, InvalidSchema, SSLError
@@ -146,7 +146,23 @@
         urlparsed = urlparse(url)
         if urlparsed.scheme not in ("http", "https", "ftp"):
             raise ArtifactNatureMistyped(f"Mistyped artifact '{url}'")
-        return Path(urlparsed.path).suffixes[-1].lstrip(".") in TARBALL_EXTENSIONS
+
+        errors = []
+        query_params = dict(parse_qsl(urlparsed.query))
+        for path in [query_params.get(key) for key in ["f", "file", "url"]] + [
+            urlparsed.path
+        ]:
+            if not path:
+                continue
+            try:
+                file_ = Path(path).suffixes[-1]
+                break
+            except IndexError as e:
+                errors.append(e)
+
+        if errors:
+            raise errors[-1]
+        return file_.lstrip(".") in TARBALL_EXTENSIONS
 
     index = random.randrange(len(urls))
     url = urls[index]
diff --git a/swh/lister/nixguix/tests/test_lister.py b/swh/lister/nixguix/tests/test_lister.py
--- a/swh/lister/nixguix/tests/test_lister.py
+++ b/swh/lister/nixguix/tests/test_lister.py
@@ -38,7 +38,24 @@
     + [[f"one.{ext}?foo=bar"] for ext in TARBALL_EXTENSIONS],
 )
 def test_is_tarball_simple(tarballs):
-    """Simple check on tarball should  discriminate betwenn tarball and file"""
+    """Simple check on tarball should  discriminate between tarball and file"""
+    urls = [f"https://example.org/{tarball}" for tarball in tarballs]
+    is_tar, origin = is_tarball(urls)
+    assert is_tar is True
+    assert origin == urls[0]
+
+
+@pytest.mark.parametrize(
+    "tarballs",
+    [
+        "download.php?file=one.tar.gz&foo=bar",
+        "count.php?f=one.gzip&foo=bar",
+        "artifact.php?url=one.zip&foo=bar",
+        "files?name=one.tbz&foo=bar",
+    ],
+)
+def test_is_tarball_not_so_simple(tarballs):
+    """More involved check on tarball should discriminate between tarball and file"""
     urls = [f"https://example.org/{tarball}" for tarball in tarballs]
     is_tar, origin = is_tarball(urls)
     assert is_tar is True