diff --git a/libs/owl.js b/libs/owl.js
index ef5cd64e..b63cd7b6 100644
--- a/libs/owl.js
+++ b/libs/owl.js
@@ -1312,7 +1312,7 @@
     // QWeb rendering engine
     //------------------------------------------------------------------------------
     class QWeb {
-        constructor() {
+        constructor(data) {
             this.processedTemplates = {};
             this.templates = {};
             this.directives = [];
@@ -1346,6 +1346,9 @@
                 refDirective,
                 widgetDirective
             ].forEach(d => this.addDirective(d));
+            if (data) {
+                this.loadTemplates(data);
+            }
         }
         addDirective(dir) {
             this.directives.push(dir);
@@ -2117,7 +2120,7 @@
     exports.extras = extras;
 
     exports._version = '0.4.0';
-    exports._date = '2019-03-29T14:38:00.073Z';
-    exports._hash = 'e6b0d06';
+    exports._date = '2019-03-29T15:41:21.984Z';
+    exports._hash = 'd6e61c2';
 
 }(this.owl = this.owl || {}));
diff --git a/src/samples.js b/src/samples.js
index 5fe07339..ce49176e 100644
--- a/src/samples.js
+++ b/src/samples.js
@@ -168,9 +168,9 @@ class App extends owl.core.Component {
 //------------------------------------------------------------------------------
 // Application initialization
 //------------------------------------------------------------------------------
-const qweb = new owl.core.QWeb();
-qweb.loadTemplates(TEMPLATES);
-const env = {qweb};
+const env = {
+  qweb: new owl.core.QWeb(TEMPLATES)
+};
 
 const app = new App(env);
 app.mount(document.body);