diff --git a/umbraco/presentation/web.STANDARD.config b/umbraco/presentation/web.STANDARD.config
index 43e28e0545..21f630c830 100644
--- a/umbraco/presentation/web.STANDARD.config
+++ b/umbraco/presentation/web.STANDARD.config
@@ -80,6 +80,7 @@
     <sessionState mode="InProc" stateConnectionString="tcpip=127.0.0.1:42424" sqlConnectionString="data source=127.0.0.1;Trusted_Connection=yes" cookieless="false" timeout="20" />
     <globalization requestEncoding="UTF-8" responseEncoding="UTF-8" />
     <xhtmlConformance mode="Strict" />
+    <httpRuntime requestValidationMode="2.0" />
     <pages enableEventValidation="false">
       <!-- ASPNETAJAX -->
       <controls>