diff --git a/ChangeLog b/ChangeLog
index 6cef1290c1..e2f3345a07 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Mon May 31 15:07:18 2010  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* file.c (file_expand_path): Refix r28102: this breaks
+	  r28039. test for [ruby-dev:41429] is added. [ruby-core:30516]
+
 Mon May 31 14:47:09 2010  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* string.c (rb_str_inspect): inspect as ASCII when the codepoint
diff --git a/file.c b/file.c
index ecf2583609..5c037fe36f 100644
--- a/file.c
+++ b/file.c
@@ -2887,7 +2887,8 @@ file_expand_path(VALUE fname, VALUE dname, int abs_mode, VALUE result)
 		xfree(dir);
 		rb_enc_associate_index(result, rb_filesystem_encindex());
 	    }
-	    else rb_enc_check(result, fname);
+	    else
+		rb_enc_associate(result, rb_enc_check(result, fname));
 	    p = chompdirsep(skiproot(buf));
 	    s += 2;
 	}
@@ -2897,7 +2898,7 @@ file_expand_path(VALUE fname, VALUE dname, int abs_mode, VALUE result)
 	if (!NIL_P(dname)) {
 	    file_expand_path(dname, Qnil, abs_mode, result);
 	    BUFINIT();
-	    rb_enc_check(result, fname);
+	    rb_enc_associate(result, rb_enc_check(result, fname));
 	}
 	else {
 	    char *dir = my_getcwd();
diff --git a/test/ruby/test_path.rb b/test/ruby/test_path.rb
index f4b1baf91c..606575e4ba 100644
--- a/test/ruby/test_path.rb
+++ b/test/ruby/test_path.rb
@@ -42,6 +42,8 @@ class TestPath < Test::Unit::TestCase
     end
     assert_equal("//", File.expand_path(".", "//"))
     assert_equal("//sub", File.expand_path("sub", "//"))
+
+    assert_equal("/tmp/\u3042", File.expand_path("\u3042", "/tmp"))
   end
 
   def test_dirname