diff --git a/py/api/admin.py b/py/api/admin.py
index 2b58b59..dc4e9bc 100644
--- a/py/api/admin.py
+++ b/py/api/admin.py
@@ -804,6 +804,9 @@ class AdminRoutesMixin:
             result = await self._run_in_executor(
                 self._delete_duplicate_images_sync, image_paths, output_dir
             )
+            if result["deleted_count"]:
+                # The cached listing would keep (and count) the deleted files.
+                self.invalidate_gallery_cache()
 
             response_data = {
                 "success": True,
diff --git a/tests/browser/workflows.spec.mjs b/tests/browser/workflows.spec.mjs
index 0ee4620..ad42f37 100644
--- a/tests/browser/workflows.spec.mjs
+++ b/tests/browser/workflows.spec.mjs
@@ -354,39 +354,48 @@ test('prompt deletion requires confirmation and can retry after a network failur
     }
 });
 
-test('duplicate cleanup cancels safely and deletes only the selected file after a retry', async ({ page, request }) => {
+// The duplicate scan reads the output root only, but the fixture's input root holds a different
+// shared/same.png. A bare /images/serve/<path> URL tries every gallery root in turn, so once the
+// output copy is deleted it answers 200 with the input copy: check each file in its own root.
+const serveIn = (root, path) => `/prompt_manager/images/serve/${path.split(/[\\/]/).map(encodeURIComponent).join('/')}?root=${root}`;
+const rootOf = url => new URL(url, 'http://gallery.test').searchParams.get('root');
+
+// Which copy the scan keeps depends on file times: the fixture stamps shared/same.png with the
+// wall clock, and the kernel can stamp its bulk copies a fraction of a millisecond earlier.
+// listOrder rewrites the finished scan's groups so a test can pick the order it needs.
+async function openDuplicateScan(page, request, listOrder = null) {
     await expect(await request.post('/__test__/reset', { data: { extra_images: 2 } })).toBeOK();
+    if (listOrder) {
+        await page.route('**/prompt_manager/scan_duplicates/stream', async route => {
+            const response = await route.fetch();
+            const body = (await response.text()).replace(/^data: (.*)$/gm, (line, json) => {
+                const event = JSON.parse(json);
+                if (event.type !== 'complete') return line;
+                for (const group of event.duplicates) group.images = listOrder(group.images);
+                return `data: ${JSON.stringify(event)}`;
+            });
+            await route.fulfill({ response, body });
+        });
+    }
     await page.goto('/prompt_manager/gallery');
     await expect(page.locator('#galleryGrid .image-item')).toHaveCount(4);
     const originals = await page.locator('#galleryGrid img[data-original]').evaluateAll(images => images.map(image => image.dataset.original));
+    const output = rootOf(originals.find(url => url.includes('/bulk/')));
+    const input = rootOf(originals.find(url => url.includes('/shared/same.png') && rootOf(url) !== output));
+    expect(output).not.toBeNull();
+    expect(input).not.toBeNull();
     await page.locator('#settingsBtn').click();
     await page.locator('#scanDuplicatesBtn').click();
     await expect(page.locator('#duplicatesCount')).toHaveText('1');
     const candidates = page.locator('.duplicate-checkbox');
     await expect(candidates).toHaveCount(2);
-    const selected = await candidates.first().getAttribute('data-image-path');
-    const retained = await candidates.last().getAttribute('data-image-path');
-    const serve = path => `/prompt_manager/images/serve/${path.split(/[\\/]/).map(encodeURIComponent).join('/')}`;
-    await candidates.first().check();
-    let deletes = 0;
-    page.on('request', request => { if (request.url().endsWith('/delete_duplicate_images')) deletes++; });
-    confirmNextDialog(page, false, 'permanently delete 1 duplicate image files');
-    await page.locator('#removeDuplicatesBtn').click();
-    expect(deletes).toBe(0);
-    await expect(await request.get(serve(selected))).toBeOK();
-    await page.route('**/prompt_manager/delete_duplicate_images', route => route.abort('failed'), { times: 1 });
-    confirmNextDialog(page, true, 'permanently delete 1 duplicate image files');
-    await page.locator('#removeDuplicatesBtn').click();
-    await expect(page.getByText('Failed to delete duplicate images', { exact: true })).toBeVisible();
-    await expect(page.locator('#removeDuplicatesBtn')).toBeEnabled();
-    await expect(await request.get(serve(selected))).toBeOK();
-    confirmNextDialog(page, true, 'permanently delete 1 duplicate image files');
-    const deleted = page.waitForResponse(response => response.url().endsWith('/delete_duplicate_images'));
-    await page.locator('#removeDuplicatesBtn').click();
-    expect((await (await deleted).json())).toMatchObject({ success: true, deleted_count: 1, failed_count: 0 });
-    await expect(page.locator('#duplicatesModal')).toBeHidden();
-    expect((await request.get(serve(selected))).status()).toBe(404);
-    await expect(await request.get(serve(retained))).toBeOK();
+    return { originals, output, input, candidates };
+}
+
+async function expectOnlySelectedGone(page, request, { originals, output, input }, selected, retained) {
+    expect((await request.get(serveIn(output, selected))).status()).toBe(404);
+    await expect(await request.get(serveIn(output, retained))).toBeOK();
+    await expect(await request.get(serveIn(input, 'shared/same.png'))).toBeOK();
     await page.reload();
     await expect(page.locator('#galleryGrid .image-item')).toHaveCount(3);
     const remaining = await page.locator('#galleryGrid img[data-original]').evaluateAll(images => images.map(image => image.dataset.original));
@@ -395,4 +404,47 @@ test('duplicate cleanup cancels safely and deletes only the selected file after
         expect(originals).toContain(url);
         await expect(await request.get(url)).toBeOK();
     }
+}
+
+test('duplicate cleanup cancels safely and deletes only the selected file after a retry', async ({ page, request }) => {
+    const scan = await openDuplicateScan(page, request);
+    const { output, candidates } = scan;
+    const selected = await candidates.first().getAttribute('data-image-path');
+    const retained = await candidates.last().getAttribute('data-image-path');
+    await candidates.first().check();
+    let deletes = 0;
+    page.on('request', request => { if (request.url().endsWith('/delete_duplicate_images')) deletes++; });
+    confirmNextDialog(page, false, 'permanently delete 1 duplicate image files');
+    await page.locator('#removeDuplicatesBtn').click();
+    expect(deletes).toBe(0);
+    await expect(await request.get(serveIn(output, selected))).toBeOK();
+    await page.route('**/prompt_manager/delete_duplicate_images', route => route.abort('failed'), { times: 1 });
+    confirmNextDialog(page, true, 'permanently delete 1 duplicate image files');
+    await page.locator('#removeDuplicatesBtn').click();
+    await expect(page.getByText('Failed to delete duplicate images', { exact: true })).toBeVisible();
+    await expect(page.locator('#removeDuplicatesBtn')).toBeEnabled();
+    await expect(await request.get(serveIn(output, selected))).toBeOK();
+    confirmNextDialog(page, true, 'permanently delete 1 duplicate image files');
+    const deleted = page.waitForResponse(response => response.url().endsWith('/delete_duplicate_images'));
+    await page.locator('#removeDuplicatesBtn').click();
+    expect((await (await deleted).json())).toMatchObject({ success: true, deleted_count: 1, failed_count: 0 });
+    await expect(page.locator('#duplicatesModal')).toBeHidden();
+    await expectOnlySelectedGone(page, request, scan, selected, retained);
+});
+
+test('deleting a duplicate whose path another gallery root also holds removes only the scanned copy', async ({ page, request }) => {
+    // The order CI saw: a bulk copy stamped first, so shared/same.png is the first Delete candidate.
+    const ciOrder = ['bulk/0000.png', 'shared/same.png', 'bulk/0001.png'];
+    const rank = image => ciOrder.indexOf(image.path.replace(/\\/g, '/'));
+    const scan = await openDuplicateScan(page, request, images => [...images].sort((a, b) => rank(a) - rank(b)));
+    const selected = await scan.candidates.first().getAttribute('data-image-path');
+    const retained = await scan.candidates.last().getAttribute('data-image-path');
+    expect(selected.replace(/\\/g, '/')).toBe('shared/same.png');
+    await scan.candidates.first().check();
+    confirmNextDialog(page, true, 'permanently delete 1 duplicate image files');
+    const deleted = page.waitForResponse(response => response.url().endsWith('/delete_duplicate_images'));
+    await page.locator('#removeDuplicatesBtn').click();
+    expect((await (await deleted).json())).toMatchObject({ success: true, deleted_count: 1, failed_count: 0 });
+    await expect(page.locator('#duplicatesModal')).toBeHidden();
+    await expectOnlySelectedGone(page, request, scan, selected, retained);
 });
diff --git a/tests/test_api_admin.py b/tests/test_api_admin.py
index 61d703b..b34c0df 100644
--- a/tests/test_api_admin.py
+++ b/tests/test_api_admin.py
@@ -868,6 +868,23 @@ class TestDeleteDuplicatesEndpoint(AdminAPITestCase):
         self.assertFalse(target.exists())
         self.assertTrue(thumb_dir.exists())
 
+    async def test_deleted_files_leave_the_cached_gallery_listing(self):
+        # The listing is cached for 30 s; a delete must not leave the gallery
+        # listing (and counting) a file that is gone.
+        GalleryConfig.MONITORING_DIRECTORIES = [self._root(self.output_dir)]
+        for name in ("keep.png", "gone.png"):
+            (self.output_dir / name).write_bytes(b"same bytes")
+
+        async def listed():
+            resp = await self.client.get("/prompt_manager/images/output")
+            data = await resp.json()
+            return data["total"], sorted(i["filename"] for i in data["images"])
+
+        self.assertEqual(await listed(), (2, ["gone.png", "keep.png"]))
+        resp = await self._post({"image_paths": ["gone.png"]})
+        self.assertEqual((await resp.json())["deleted_count"], 1)
+        self.assertEqual(await listed(), (1, ["keep.png"]))
+
     def test_unexpected_error_per_file_is_reported_without_path(self):
         self.api._delete_one_duplicate = lambda *a: (_ for _ in ()).throw(
             PermissionError(13, "Permission denied", os.path.join(self.tmpdir, "x.png"))