1 files changed, 1 insertions, 2 deletions
diff --git a/re.c b/re.c
index 7c925c6ba7..bceec15f0a 100644
--- a/re.c
+++ b/re.c
@@ -340,8 +340,7 @@ rb_reg_expr_str(VALUE str, const char *s, long len,
 
     p = s; pend = p + len;
     rb_str_coderange_scan_restartable(p, pend, enc, &cr);
-    if (rb_enc_asciicompat(enc) &&
-	(cr == ENC_CODERANGE_VALID || cr == ENC_CODERANGE_7BIT)) {
+    if (rb_enc_asciicompat(enc) && ENC_CODERANGE_CLEAN_P(cr)) {
 	while (p < pend) {
 	    c = rb_enc_ascget(p, pend, &clen, enc);
 	    if (c == -1) {