diff --git a/nbdev/_modidx.py b/nbdev/_modidx.py
index ba3acdd88..b572b2499 100644
--- a/nbdev/_modidx.py
+++ b/nbdev/_modidx.py
@@ -332,4 +332,4 @@
                             'nbdev.sync.nbdev_update': ('api/sync.html#nbdev_update', 'nbdev/sync.py')},
             'nbdev.test': { 'nbdev.test._keep_file': ('api/test.html#_keep_file', 'nbdev/test.py'),
                             'nbdev.test.nbdev_test': ('api/test.html#nbdev_test', 'nbdev/test.py'),
-                            'nbdev.test.test_nb': ('api/test.html#test_nb', 'nbdev/test.py')}}}
\ No newline at end of file
+                            'nbdev.test.test_nb': ('api/test.html#test_nb', 'nbdev/test.py')}}}
diff --git a/nbdev/doclinks.py b/nbdev/doclinks.py
index 2d07fcdb7..c52b8cdd6 100644
--- a/nbdev/doclinks.py
+++ b/nbdev/doclinks.py
@@ -96,7 +96,7 @@ def _build_modidx(dest=None, nbs_path=None, skip_exists=False):
     code_root = dest.parent.resolve()
     for file in globtastic(dest, file_glob="*.py", skip_file_re='^_', skip_folder_re="\.ipynb_checkpoints"):
         res['syms'].update(_get_modidx((dest.parent/file).resolve(), code_root, nbs_path=nbs_path))
-    idxfile.write_text("# Autogenerated by nbdev\n\nd = "+pformat(res, width=140, indent=2, compact=True))
+    idxfile.write_text("# Autogenerated by nbdev\n\nd = "+pformat(res, width=140, indent=2, compact=True)+'\n')
 
 # %% ../nbs/api/doclinks.ipynb 20
 @delegates(globtastic)
diff --git a/nbs/api/doclinks.ipynb b/nbs/api/doclinks.ipynb
index d41773e89..68d6cdfa8 100644
--- a/nbs/api/doclinks.ipynb
+++ b/nbs/api/doclinks.ipynb
@@ -237,7 +237,7 @@
     "    code_root = dest.parent.resolve()\n",
     "    for file in globtastic(dest, file_glob=\"*.py\", skip_file_re='^_', skip_folder_re=\"\\.ipynb_checkpoints\"):\n",
     "        res['syms'].update(_get_modidx((dest.parent/file).resolve(), code_root, nbs_path=nbs_path))\n",
-    "    idxfile.write_text(\"# Autogenerated by nbdev\\n\\nd = \"+pformat(res, width=140, indent=2, compact=True))"
+    "    idxfile.write_text(\"# Autogenerated by nbdev\\n\\nd = \"+pformat(res, width=140, indent=2, compact=True)+'\\n')"
    ]
   },
   {