diff --git a/bin/wcwidth-browser.py b/bin/wcwidth-browser.py
index 47e932a..0718cae 100755
--- a/bin/wcwidth-browser.py
+++ b/bin/wcwidth-browser.py
@@ -116,7 +116,7 @@ def __init__(self, width, unicode_version):
         """
         self.characters = []
         letters_o = ('o' * width)
-        for (begin, end) in ZERO_WIDTH[unicode_version]:
+        for (begin, end) in ZERO_WIDTH[_wcmatch_version(unicode_version)]:
             for val in [_val for _val in
                         range(begin, end + 1)
                         if _val <= LIMIT_UCS]: