diff --git a/crates/catalog/src/local.rs b/crates/catalog/src/local.rs
index 093c22427..184618ac9 100644
--- a/crates/catalog/src/local.rs
+++ b/crates/catalog/src/local.rs
@@ -64,7 +64,8 @@ pub fn folder_of(p: &Photo) -> Option<String> {
         // `/` and `\` are both separators whatever the platform (a catalog can move between them)
         Source::File { path } => {
             let key = crate::query::folder_key(path);
-            key.rsplit_once('/').map(|(dir, _)| if dir.is_empty() { "/".to_string() } else { dir.to_string() })
+            // a drive or share root keeps its trailing `/` in its key (`c:/`, `//srv/share/`)
+            key.rsplit_once('/').map(|(dir, _)| if dir.is_empty() { "/".to_string() } else { crate::query::folder_key(&format!("{dir}/")) })
         }
         Source::Demo { .. } => None,
     }
diff --git a/crates/catalog/src/tests_local.rs b/crates/catalog/src/tests_local.rs
index 4b76dace6..ca6ebef0d 100644
--- a/crates/catalog/src/tests_local.rs
+++ b/crates/catalog/src/tests_local.rs
@@ -265,3 +265,17 @@ fn op_photo_ids_cover_nested_ops() {
     op.photo_ids(&mut |id| ids.push(id.0));
     assert_eq!(ids, vec![1, 2, 3, 4]);
 }
+
+#[test]
+fn drive_and_share_root_records_are_forgotten() {
+    for (path, folder) in [("C:\\IMG_1.JPG", "C:\\"), ("//srv/share/x.jpg", "//srv/share/")] {
+        let mut c = Catalog::new();
+        let id = c.alloc_photo_id();
+        let mut p = Photo::new(id, Source::File { path: path.into() }, "x.jpg", "JPEG", 60, 40, OLD);
+        p.local = true;
+        p.set_local_baseline();
+        c.apply(Op::AddPhoto { photo: Box::new(p) }).unwrap();
+        c.apply(Op::SetBrowsed { folder: folder.into(), at: Some(OLD.into()) }).unwrap();
+        assert_eq!(plan(&c, 30).evict, vec![id], "{path}");
+    }
+}