diff --git a/web/src/main/webapp/WEB-INF/web.xml b/web/src/main/webapp/WEB-INF/web.xml
index 8b7b635..66ff282 100644
--- a/web/src/main/webapp/WEB-INF/web.xml
+++ b/web/src/main/webapp/WEB-INF/web.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+<web-app xmlns="http://java.sun.com/xml/ns/javaee"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
 	version="3.0">
 
@@ -7,4 +8,10 @@
 		<tracking-mode>COOKIE</tracking-mode>
 	</session-config>
 
+	<context-param>
+		<description>Vaadin production mode</description>
+		<param-name>productionMode</param-name>
+		<param-value>true</param-value>
+	</context-param>
+
 </web-app>