1 files changed, 1 insertions, 1 deletions
diff --git a/file.c b/file.c
index 98a203239..256c348d0 100644
--- a/file.c
+++ b/file.c
@@ -2749,7 +2749,7 @@ file_expand_path(VALUE fname, VALUE dname, int abs_mode, VALUE result)
 	    memcpy(p, s, 2);
 	    p += 2;
 	    s += 2;
-	    rb_enc_associate_index(result, rb_usascii_encindex());
+	    rb_enc_copy(result, fname);
 	}
 	else {
 	    /* specified drive, but not full path */