--- dir.c	2013-02-22 18:46:41.000000000 +0900
+++ dir.new.c	2013-02-22 18:46:08.000000000 +0900
@@ -2010,6 +2010,7 @@
     VALUE pattern, path;
     VALUE rflags;
     int flags;
+    rb_encoding *enc;
 
     if (rb_scan_args(argc, argv, "21", &pattern, &path, &rflags) == 3)
 	flags = NUM2INT(rflags);
@@ -2018,6 +2019,7 @@
 
     StringValue(pattern);
     FilePathStringValue(path);
+    enc = rb_enc_check(pattern, path);
 
     if (flags & FNM_EXTGLOB) {
 	struct brace_args args;
@@ -2025,12 +2027,11 @@
 	args.value = path;
 	args.flags = flags;
 	if (ruby_brace_expand(RSTRING_PTR(pattern), flags, fnmatch_brace,
-			      (VALUE)&args, rb_enc_get(pattern)) > 0)
+			      (VALUE)&args, enc) > 0)
 	    return Qtrue;
     }
     else {
-	if (fnmatch(RSTRING_PTR(pattern), rb_enc_get(pattern), RSTRING_PTR(path),
-		    flags) == 0)
+	if (fnmatch(RSTRING_PTR(pattern), enc, RSTRING_PTR(path), flags) == 0)
 	    return Qtrue;
     }
     RB_GC_GUARD(pattern);