diff --git a/nbdev/doclinks.py b/nbdev/doclinks.py
index 09a9104c1..f2183dbd5 100644
--- a/nbdev/doclinks.py
+++ b/nbdev/doclinks.py
@@ -296,6 +296,7 @@ def link_line(self, l): return _re_backticks.sub(self._link_sym, l)
 
     def linkify(self, md):
         if md:
+            if isinstance(md,list): md = ''.join(md)
             in_fence=False
             lines = md.splitlines()
             for i,l in enumerate(lines):
diff --git a/nbs/api/05_doclinks.ipynb b/nbs/api/05_doclinks.ipynb
index 53541cad6..a8311e93d 100644
--- a/nbs/api/05_doclinks.ipynb
+++ b/nbs/api/05_doclinks.ipynb
@@ -726,6 +726,7 @@
     "\n",
     "    def linkify(self, md):\n",
     "        if md:\n",
+    "            if isinstance(md,list): md = ''.join(md)\n",
     "            in_fence=False\n",
     "            lines = md.splitlines()\n",
     "            for i,l in enumerate(lines):\n",
@@ -1046,6 +1047,17 @@
     "assert NbdevLookup().linkify(md) == md"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "f3a1b2c4",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# Outputs read from disk may store markdown as a list of lines\n",
+    "test_eq(NbdevLookup().linkify(['a\\n','b']), 'a\\nb')"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,