diff --git a/src/Orchard.Web/Web.config b/src/Orchard.Web/Web.config
index e89891961..f3ebacbf6 100644
--- a/src/Orchard.Web/Web.config
+++ b/src/Orchard.Web/Web.config
@@ -54,8 +54,8 @@
             affects performance, set this value to true only 
             during development.
     -->
-    <compilation debug="true" targetFramework="4.0" batch="true" numRecompilesBeforeAppRestart="250">
-      <buildProviders>
+    <compilation debug="true" targetFramework="4.0" batch="true" numRecompilesBeforeAppRestart="250" optimizeCompilations="true">
+        <buildProviders>
         <add extension=".csproj" type="Orchard.Environment.Extensions.Compilers.CSharpExtensionBuildProviderShim"/>
       </buildProviders>
       <assemblies>