diff --git a/lib/openhab/core/proxy.rb b/lib/openhab/core/proxy.rb
index bd8b796a7..ecd6a5452 100644
--- a/lib/openhab/core/proxy.rb
+++ b/lib/openhab/core/proxy.rb
@@ -120,6 +120,11 @@ def self.included(klass)
         # define a sub-class of EventSubscriber as a child class of the including class
         klass.const_set(:EventSubscriber, Class.new(EventSubscriber))
       end
+
+      # @!visibility private
+      def to_java
+        __getobj__
+      end
     end
   end
 end