diff --git a/src/mfm/parse/elements/hashtag.ts b/src/mfm/parse/elements/hashtag.ts
index e4e9df6ce..b5c8ae5ac 100644
--- a/src/mfm/parse/elements/hashtag.ts
+++ b/src/mfm/parse/elements/hashtag.ts
@@ -9,9 +9,9 @@ export type TextElementHashtag = {
 };
 
 export default function(text: string, i: number) {
-	if (!(/^\s#[^\s\.,!\?]+/.test(text) || (i == 0 && /^#[^\s\.,!\?]+/.test(text)))) return null;
+	if (!(/^\s#[^\s\.,!\?#]+/.test(text) || (i == 0 && /^#[^\s\.,!\?#]+/.test(text)))) return null;
 	const isHead = text.startsWith('#');
-	const hashtag = text.match(/^\s?#[^\s\.,!\?]+/)[0];
+	const hashtag = text.match(/^\s?#[^\s\.,!\?#]+/)[0];
 	const res: any[] = !isHead ? [{
 		type: 'text',
 		content: text[0]