diff --git a/news/213.bugfix b/news/213.bugfix
new file mode 100644
index 00000000..84e44c93
--- /dev/null
+++ b/news/213.bugfix
@@ -0,0 +1,2 @@
+Fix pattern options for `LinkWidget`.
+[petschki]
diff --git a/plone/app/z3cform/widgets/link.py b/plone/app/z3cform/widgets/link.py
index 7af27b5f..6f9fbdf6 100644
--- a/plone/app/z3cform/widgets/link.py
+++ b/plone/app/z3cform/widgets/link.py
@@ -22,10 +22,13 @@ class LinkWidget(HTMLTextInputWidget, Widget):
     """
 
     def pattern_data(self):
+        context = self.context or getSite()
         pattern_data = {
             "vocabularyUrl": "{}/@@getVocabulary?name=plone.app.vocabularies.Catalog".format(  # noqa
                 getSite().absolute_url(0),
             ),
+            "rootPath": "/".join(getSite().getPhysicalPath()),
+            "basePath": "/".join(context.getPhysicalPath()),
             "maximumSelectionSize": 1,
         }
         return json.dumps(pattern_data)