diff --git a/lib/rspec/mocks/verifying_double.rb b/lib/rspec/mocks/verifying_double.rb
index a511656e6..478e1ebbe 100644
--- a/lib/rspec/mocks/verifying_double.rb
+++ b/lib/rspec/mocks/verifying_double.rb
@@ -5,6 +5,14 @@ module Mocks
 
     # @api private
     module VerifyingDouble
+      def respond_to?(message, include_private=false)
+        if null_object?
+          __mock_proxy.method_reference[message].when_unimplemented { return false }
+        end
+
+        super
+      end
+
       def method_missing(message, *args, &block)
         # Null object conditional is an optimization. If not a null object,
         # validity of method expectations will have been checked at definition
diff --git a/spec/rspec/mocks/verifying_double_spec.rb b/spec/rspec/mocks/verifying_double_spec.rb
index 0ac37a2cb..217d5d77a 100644
--- a/spec/rspec/mocks/verifying_double_spec.rb
+++ b/spec/rspec/mocks/verifying_double_spec.rb
@@ -188,7 +188,10 @@ module Mocks
             o = instance_double('LoadedClass').as_null_object
 
             expect(o.defined_instance_method).to eq(o)
+            expect(o).to respond_to(:defined_instance_method)
+
             prevents { o.undefined_method }
+            expect(o).not_to respond_to(:undefined_method)
           end
         end