diff --git a/swh/lister/sourceforge/lister.py b/swh/lister/sourceforge/lister.py
--- a/swh/lister/sourceforge/lister.py
+++ b/swh/lister/sourceforge/lister.py
@@ -386,14 +386,15 @@
                         match = re.search(rf".*/cvsroot/{project} co -P (.+)", text)
                         if match is not None:
                             module = match.group(1)
-                            url = f"{cvs_base_url}/{project}/{module}"
-                            hits.append(
-                                SourceForgeListerEntry(
-                                    vcs=VcsNames(tool_name),
-                                    url=url,
-                                    last_modified=last_modified,
+                            if module != "Attic":
+                                url = f"{cvs_base_url}/{project}/{module}"
+                                hits.append(
+                                    SourceForgeListerEntry(
+                                        vcs=VcsNames(tool_name),
+                                        url=url,
+                                        last_modified=last_modified,
+                                    )
                                 )
-                            )
                     continue
             url = CLONE_URL_FORMAT.format(
                 vcs=tool_name,
diff --git a/swh/lister/sourceforge/tests/data/aaron.html b/swh/lister/sourceforge/tests/data/aaron.html
--- a/swh/lister/sourceforge/tests/data/aaron.html
+++ b/swh/lister/sourceforge/tests/data/aaron.html
@@ -16,6 +16,7 @@
 You can run a per-module CVS checkout via pserver protocol:
 <li><b>cvs -z3 -d:pserver:anonymous@a.cvs.sourceforge.net:/cvsroot/aaron co -P aaron</b></li>
 <li><b>cvs -z3 -d:pserver:anonymous@a.cvs.sourceforge.net:/cvsroot/aaron co -P www</b></li>
+<li><b>cvs -z3 -d:pserver:anonymous@a.cvs.sourceforge.net:/cvsroot/aaron co -P Attic</b></li>
 <p>You can view a list of files or copy all the CVS repository data via rsync (the 1st command lists the files, the 2nd copies):
 <li><b>rsync -a a.cvs.sourceforge.net::cvsroot/aaron/</b></li>
 <li><b>rsync -ai a.cvs.sourceforge.net::cvsroot/aaron/ /my/local/dest/dir/</b></li>