diff --git a/src/lib/xml2js.ts b/src/lib/xml2js.ts
index e2eed33..aea3d17 100644
--- a/src/lib/xml2js.ts
+++ b/src/lib/xml2js.ts
@@ -81,7 +81,7 @@ export class Xml2js {
       valueNodes = this.helper.selectNodes(input, './value');
     if (!valueNodes.length)
       return [];
-    return valueNodes.map(this.convert);
+    return valueNodes.map(this.convert, this);
   }
 
   /**
@@ -114,7 +114,7 @@ export class Xml2js {
   /**
    * Convert an xmlrpc value (as an xml tree) to a javascript object.
    */
-  convert(input:Node):Object|null {
+  convert(input:Node):Object|any[]|null {
       const elt = this.helper.selectSingleNode(input, './*')
       if (!elt)
           return null
diff --git a/src/lib/xmlrpc.service.ts b/src/lib/xmlrpc.service.ts
index 23d0cab..57e0299 100644
--- a/src/lib/xmlrpc.service.ts
+++ b/src/lib/xmlrpc.service.ts
@@ -77,10 +77,11 @@ export class XmlrpcService {
    *  - undefined: for empty response
    *  - null: for 'nil' value
    *  - Object: the value as an Object
+   *  - any[]: if the value was an Array
    *
    * @throws {@link Error} on fault response (or unexpected server error)
    */
-  parseResponse(response:string):Object|null|undefined {
+  parseResponse(response:string):Object|any[]|null|undefined {
     const doc = this.helper.loadXml(response)
     const rootNode = doc.firstChild
     if (!rootNode)