diff --git a/test/test_rdoc_rdoc.rb b/test/test_rdoc_rdoc.rb
index 7c54e543f9..4014ecfa54 100644
--- a/test/test_rdoc_rdoc.rb
+++ b/test/test_rdoc_rdoc.rb
@@ -200,7 +200,7 @@ def test_normalized_file_list_with_dot_doc
       expected_files << a
       expected_files << b
 
-      @rdoc.normalized_file_list [dir]
+      @rdoc.normalized_file_list [File.realpath(dir)]
     end
 
     files = files.map { |file| File.expand_path file }
@@ -227,7 +227,7 @@ def test_normalized_file_list_with_dot_doc_overridden_by_exclude_option
       expected_files << a
 
       @rdoc.options.exclude = Regexp.new(['b.rb'].join('|'))
-      @rdoc.normalized_file_list [dir]
+      @rdoc.normalized_file_list [File.realpath(dir)]
     end
 
     files = files.map { |file| File.expand_path file }