Index: src/main/java/org/jboss/weld/bean/SessionBean.java
===================================================================
--- src/main/java/org/jboss/weld/bean/SessionBean.java	(revision 5159)
+++ src/main/java/org/jboss/weld/bean/SessionBean.java	(working copy)
@@ -32,6 +32,7 @@
 import java.io.Serializable;
 import java.lang.annotation.Annotation;
 import java.lang.reflect.Method;
+import java.lang.reflect.ParameterizedType;
 import java.lang.reflect.Type;
 import java.util.Arrays;
 import java.util.Collections;
@@ -209,6 +210,7 @@
       for (BusinessInterfaceDescriptor<?> businessInterfaceDescriptor : ejbDescriptor.getLocalBusinessInterfaces())
       {
          types.put(businessInterfaceDescriptor.getInterface(), businessInterfaceDescriptor.getInterface());
+         initInterfaces(businessInterfaceDescriptor.getInterface(), types);
       }
       if (getAnnotatedItem().isAnnotationPresent(Typed.class))
       {
@@ -220,6 +222,16 @@
          super.types = new HashSet<Type>(types.values());
       }
    }
+   
+   private void initInterfaces(Class<?> itf, Map<Class<?>, Type> types) 
+   {
+      Class<?>[] parentInterfaces = itf.getInterfaces();
+      for (Class<?> parentInterface : parentInterfaces) 
+      {
+         types.put(parentInterface, parentInterface);
+         initInterfaces(parentInterface, types);
+      }
+   }
 
    protected void initProxyClass()
    {