diff --git a/src/Castle.Core/DynamicProxy/ModuleScope.cs b/src/Castle.Core/DynamicProxy/ModuleScope.cs
index b70b10984e..f6b3ae7d8b 100644
--- a/src/Castle.Core/DynamicProxy/ModuleScope.cs
+++ b/src/Castle.Core/DynamicProxy/ModuleScope.cs
@@ -335,9 +335,9 @@ private ModuleBuilder CreateModule(bool signStrongName)
 			{
 #if FEATURE_APPDOMAIN
 				var assemblyBuilder = AppDomain.CurrentDomain.DefineDynamicAssembly(
-					assemblyName, AssemblyBuilderAccess.Run);
+					assemblyName, AssemblyBuilderAccess.RunAndCollect);
 #else
-				var assemblyBuilder = AssemblyBuilder.DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.Run);
+				var assemblyBuilder = AssemblyBuilder.DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.RunAndCollect);
 #endif
 
 				var module = assemblyBuilder.DefineDynamicModule(moduleName);