diff --git a/lib/pp.rb b/lib/pp.rb
index 1ec5a88..d3f0f78 100644
--- a/lib/pp.rb
+++ b/lib/pp.rb
@@ -189,7 +189,7 @@ def pop_inspect_key(id)
     def pp(obj)
       # If obj is a Delegator then use the object being delegated to for cycle
       # detection
-      obj = obj.__getobj__ if defined?(::Delegator) and obj.is_a?(::Delegator)
+      obj = obj.__getobj__ if defined?(::Delegator) and ::Delegator === obj
 
       if check_inspect_key(obj)
         group {obj.pretty_print_cycle self}
@@ -198,7 +198,11 @@ def pp(obj)
 
       begin
         push_inspect_key(obj)
-        group {obj.pretty_print self}
+        group do
+          obj.pretty_print self
+        rescue NoMethodError
+          text Kernel.instance_method(:inspect).bind_call(obj)
+        end
       ensure
         pop_inspect_key(obj) unless PP.sharing_detection
       end
diff --git a/test/test_pp.rb b/test/test_pp.rb
index 2fdd5df..45c7691 100644
--- a/test/test_pp.rb
+++ b/test/test_pp.rb
@@ -125,6 +125,11 @@ def a.to_s() "aaa" end
     result = PP.pp(a, ''.dup)
     assert_equal("#{a.inspect}\n", result)
   end
+
+  def test_basic_object
+    a = BasicObject.new
+    assert_match(/\A#<BasicObject:0x[\da-f]+>\n\z/, PP.pp(a, ''.dup))
+  end
 end
 
 class PPCycleTest < Test::Unit::TestCase