diff --git a/Objects/bytearrayobject.c b/Objects/bytearrayobject.c
index 1a50ce3..f419eee 100644
--- a/Objects/bytearrayobject.c
+++ b/Objects/bytearrayobject.c
@@ -2465,7 +2465,7 @@
 }
 
 PyDoc_STRVAR(decode_doc,
-"B.decode([encoding='utf-8'[, errors='strict']]) -> str\n\
+"B.decode(encoding='utf-8', errors='strict') -> str\n\
 \n\
 Decode B using the codec registered for encoding. Default encoding\n\
 is 'utf-8'. errors may be given to set a different error\n\
diff --git a/Objects/bytesobject.c b/Objects/bytesobject.c
index b8fa8ee..96134a3 100644
--- a/Objects/bytesobject.c
+++ b/Objects/bytesobject.c
@@ -2289,7 +2289,7 @@
 
 
 PyDoc_STRVAR(decode__doc__,
-"B.decode([encoding='utf-8'[, errors='strict']]) -> str\n\
+"B.decode(encoding='utf-8', errors='strict') -> str\n\
 \n\
 Decode B using the codec registered for encoding. Default encoding\n\
 is 'utf-8'. errors may be given to set a different error\n\
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 4be0b17..cff756a 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -7393,7 +7393,7 @@
 }
 
 PyDoc_STRVAR(encode__doc__,
-             "S.encode([encoding='utf-8'[, errors='strict']]) -> bytes\n\
+             "S.encode(encoding='utf-8', errors='strict') -> bytes\n\
 \n\
 Encode S using the codec registered for encoding. Default encoding\n\
 is 'utf-8'. errors may be given to set a different error\n\