diff --git a/Lib/imaplib.py b/Lib/imaplib.py
index 0112ddc4846..b70c47ca1ce 100644
--- a/Lib/imaplib.py
+++ b/Lib/imaplib.py
@@ -621,7 +621,7 @@ class IMAP4:
     def setacl(self, mailbox, who, what):
         """Set a mailbox acl.
 
-        (typ, [data]) = <instance>.create(mailbox, who, what)
+        (typ, [data]) = <instance>.setacl(mailbox, who, what)
         """
         return self._simple_command('SETACL', mailbox, who, what)