diff --git a/src/compiler/parse/state/tag.ts b/src/compiler/parse/state/tag.ts
index a5d934e3c1..761ce5437d 100644
--- a/src/compiler/parse/state/tag.ts
+++ b/src/compiler/parse/state/tag.ts
@@ -10,7 +10,7 @@ import read_style from '../read/style';
 import { closing_tag_omitted, decode_character_references } from '../utils/html';
 
 // characters equivalent to using \s in regex
-const whitespace_characters = ['\r', '\n', '\t', '\f', '\v', ' ', '\u00a0', '\u1680', '\u2000-', '\u200a', '\u2028', '\u2029', '\u202f', '\u205f', '\u3000', '\ufeff'];
+const whitespace_characters = ['\r', '\n', '\t', '\f', '\v', ' ', '\u00a0', '\u1680', '\u2000', '\u2001', '\u2002', '\u2003', '\u2004', '\u2005', '\u2006', '\u2007', '\u2008', '\u2009', '\u200a', '\u2028', '\u2029', '\u202f', '\u205f', '\u3000', '\ufeff'];
 
 // eslint-disable-next-line no-useless-escape
 const valid_tag_name = /^\!?[a-zA-Z]{1,}:?[a-zA-Z0-9\-]*/;