diff --git a/koans/about_java_interop.rb b/koans/about_java_interop.rb
index fb26693..66f79c4 100644
--- a/koans/about_java_interop.rb
+++ b/koans/about_java_interop.rb
@@ -103,11 +103,9 @@ class AboutJavaInterop < EdgeCase::Koan
   end
 
   def test_some_ruby_objects_can_NOT_be_coerced_to_java
-    [[], {}, Object.new].each do |ruby_object|
-      assert_raise(___) do
-        ruby_object.to_java_class
-      end
-    end
+    assert_equal __, [].to_java.class == Java::JavaUtil::ArrayList
+    assert_equal __, {}.to_java.class == Java::JavaUtil::HashMap
+    assert_equal __, Object.new.to_java.class == Java::JavaLang::Object
   end
 
   def test_java_collections_are_enumerable
diff --git a/src/about_java_interop.rb b/src/about_java_interop.rb
index bb63a5f..56035db 100644
--- a/src/about_java_interop.rb
+++ b/src/about_java_interop.rb
@@ -103,11 +103,9 @@ class AboutJavaInterop < EdgeCase::Koan
   end
 
   def test_some_ruby_objects_can_NOT_be_coerced_to_java
-    [[], {}, Object.new].each do |ruby_object|
-      assert_raise(___(NoMethodError)) do
-        ruby_object.to_java_class
-      end
-    end
+    assert_equal __(false), [].to_java.class == Java::JavaUtil::ArrayList
+    assert_equal __(false), {}.to_java.class == Java::JavaUtil::HashMap
+    assert_equal __(false), Object.new.to_java.class == Java::JavaLang::Object
   end
 
   def test_java_collections_are_enumerable