diff --git a/src/mistune/list_parser.py b/src/mistune/list_parser.py
index 6a5e8dd..a78e1a5 100644
--- a/src/mistune/list_parser.py
+++ b/src/mistune/list_parser.py
@@ -13,7 +13,7 @@
     r'(?P<list_3>[ \t]*|[ \t].+)$'
 )
 
-_LINE_HAS_TEXT = re.compile(r'( *)\S')
+_LINE_HAS_TEXT = re.compile(r'(\s*)\S')
 
 
 def parse_list(block, m: re.Match, state: BlockState) -> int: