diff --git a/llmsurgery/dlgskill.py b/llmsurgery/dlgskill.py
index e9eb815..dd6c957 100644
--- a/llmsurgery/dlgskill.py
+++ b/llmsurgery/dlgskill.py
@@ -65,7 +65,7 @@ def set_dlg(
 ):
     "Set the current dialog file, used by these functions when `dlg` is None"
     global _cur_dlg
-    _cur_dlg = Path(fname)
+    _cur_dlg = Path(fname).resolve()
     return _cur_dlg
 
 def cur_dlg():
diff --git a/nbs/05_dlgskill.ipynb b/nbs/05_dlgskill.ipynb
index c6aa230..489d67b 100644
--- a/nbs/05_dlgskill.ipynb
+++ b/nbs/05_dlgskill.ipynb
@@ -129,7 +129,7 @@
     "):\n",
     "    \"Set the current dialog file, used by these functions when `dlg` is None\"\n",
     "    global _cur_dlg\n",
-    "    _cur_dlg = Path(fname)\n",
+    "    _cur_dlg = Path(fname).resolve()\n",
     "    return _cur_dlg\n",
     "\n",
     "def cur_dlg():\n",
@@ -505,7 +505,18 @@
    "execution_count": null,
    "id": "dfcaa924",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "174f46e0:p:Double it. ⇒ reply(13)"
+      ]
+     },
+     "execution_count": null,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "rows = find_msgs('42', dlg=tdir/'demo.ipynb', context=0)\n",
     "test_eq([r.id for r in rows], [ask.id])\n",
@@ -1069,6 +1080,18 @@
     "assert 'kind=\"system\"' in str(xd.view())  # tagged raws are badged, never shown as ordinary content"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "caf28e42",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "with working_directory(tdir):\n",
+    "    set_dlg('demo.ipynb')\n",
+    "    with working_directory('/'): assert cur_dlg() is not None  # registration survives later cwd changes"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,
@@ -1137,7 +1160,18 @@
    "execution_count": null,
    "id": "bbaf5997",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "9b80fe7c:c:x = 21\\n\\nx*2"
+      ]
+     },
+     "execution_count": null,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "s1, s2 = split_msg(calc.id, 2)\n",
     "test_eq(read_ipynb(tdir/'demo.ipynb').msg(s2).content, 'x*2')\n",
@@ -1195,7 +1229,16 @@
    ]
   }
  ],
- "metadata": {},
+ "metadata": {
+  "solveit": {
+   "default_code": true,
+   "math_mode": 1,
+   "mode": "learning",
+   "use_thinking": false,
+   "use_tools": true,
+   "ver": 2
+  }
+ },
  "nbformat": 4,
  "nbformat_minor": 5
 }