diff --git a/src/ply/lex.py b/src/ply/lex.py
index de011fe..7037c09 100644
--- a/src/ply/lex.py
+++ b/src/ply/lex.py
@@ -714,7 +714,7 @@ def validate_module(self, module):
 #
 # Build all of the regular expression rules from definitions in the supplied module
 # -----------------------------------------------------------------------------
-def lex(*, module=None, object=None, debug=False, 
+def lex(*, module=None, object=None, debug=False,
         reflags=int(re.VERBOSE), debuglog=None, errorlog=None):
 
     global lexer