Index: impl/src/main/java/org/jboss/weld/injection/FieldInjectionPoint.java
===================================================================
--- impl/src/main/java/org/jboss/weld/injection/FieldInjectionPoint.java	(revision 5486)
+++ impl/src/main/java/org/jboss/weld/injection/FieldInjectionPoint.java	(working copy)
@@ -106,7 +106,13 @@
    {
       try
       {
-         delegate().set(declaringInstance, value);
+          Object instanceToInject = declaringInstance;
+          if (!isDelegate())
+          {
+             // if declaringInstance is a proxy, unwrap it
+             instanceToInject = InterceptionUtils.getRawInstance(declaringInstance);
+          }
+         delegate().set(instanceToInject, value);
       }
       catch (IllegalArgumentException e)
       {