diff --git a/types/xmlpoke/index.d.ts b/types/xmlpoke/index.d.ts
index d8566d4364..68bde4f9ab 100644
--- a/types/xmlpoke/index.d.ts
+++ b/types/xmlpoke/index.d.ts
@@ -25,6 +25,7 @@ declare module XmlPoke { // ghost module
 		withBasePath(xpath: string): API;
 		addNamespace(prefix: string, uri: string): API;
 		errorOnNoMatches(): API;
+        ensure(xpath: string): API;
 	}
 	interface CDataValue {
 		value: string;
diff --git a/types/xmlpoke/xmlpoke-tests.ts b/types/xmlpoke/xmlpoke-tests.ts
index 1079d19756..04cab2aa1f 100644
--- a/types/xmlpoke/xmlpoke-tests.ts
+++ b/types/xmlpoke/xmlpoke-tests.ts
@@ -76,3 +76,7 @@ result = xmlpoke('<test><x><![CDATA[hello]]></x></test>', xml =>
             return 'y';
        }));
 assert.equal(result, '<test><x>y</x></test>');
+
+// ensure
+result = xmlpoke('</a>', xml => xml.ensure('a/b'));
+assert.equal(result, '<a><b/></a>');