diff --git a/Lib/base64.py b/Lib/base64.py
index 7e9c2a2ca477ff..30468e475352fa 100755
--- a/Lib/base64.py
+++ b/Lib/base64.py
@@ -567,13 +567,13 @@ def decodebytes(s):
 def main():
     """Small main program"""
     import sys, getopt
-    usage = """usage: %s [-h|-d|-e|-u|-t] [file|-]
+    usage = """usage: %s [-h|-d|-e|-u] [file|-]
         -h: print this help message and exit
         -d, -u: decode
         -e: encode (default)
         -t: encode and decode string 'Aladdin:open sesame'"""%sys.argv[0]
     try:
-        opts, args = getopt.getopt(sys.argv[1:], 'hdeut')
+        opts, args = getopt.getopt(sys.argv[1:], 'hdeu')
     except getopt.error as msg:
         sys.stdout = sys.stderr
         print(msg)