diff --git a/sbv2_core/src/norm.rs b/sbv2_core/src/norm.rs
index 57594fa..3bce32f 100644
--- a/sbv2_core/src/norm.rs
+++ b/sbv2_core/src/norm.rs
@@ -69,7 +69,7 @@ __PUNCTUATION_CLEANUP_PATTERN = re.compile(
     + "".join(PUNCTUATIONS) + r"]+",  # fmt: skip
 )
 */
-static __PUNCTUATION_CLEANUP_PATTERN: Lazy<regex::Regex> = Lazy::new(|| {
+static PUNCTUATION_CLEANUP_PATTERN: Lazy<regex::Regex> = Lazy::new(|| {
     let pattern = (
         r"[^\u{3040}-\u{309F}\u{30A0}-\u{30FF}\u{4E00}-\u{9FFF}\u{3400}-\u{4DBF}\u{3005}".to_owned()
         + r"\u{0041}-\u{005A}\u{0061}-\u{007A}"