diff --git a/tqdm/std.py b/tqdm/std.py
index 56d0628d..54336230 100644
--- a/tqdm/std.py
+++ b/tqdm/std.py
@@ -490,7 +490,7 @@ class tqdm(Comparable):
                 return nobar
             full_bar = Bar(
                 0,
-                max(1, ncols - len(RE_ANSI.sub('', nobar))) if ncols else 10,
+                max(1, ncols - _text_width(RE_ANSI.sub('', nobar))) if ncols else 10,
                 charset=Bar.BLANK)
             return bar_format.format(bar=full_bar, **format_dict)
         else:
diff --git a/tqdm/utils.py b/tqdm/utils.py
index ee8a8769..17b6aba6 100644
--- a/tqdm/utils.py
+++ b/tqdm/utils.py
@@ -286,6 +286,7 @@ def _term_move_up():  # pragma: no cover
 
 
 def _text_width(s):  # pragma: no cover
+    # TODO consider using wcswidth third-party package for 0-width characters
     try:
         from unicodedata import east_asian_width
     except ImportError: