diff --git a/stdlib/2and3/binascii.pyi b/stdlib/2and3/binascii.pyi
index 0ace3eb46..7e023c239 100644
--- a/stdlib/2and3/binascii.pyi
+++ b/stdlib/2and3/binascii.pyi
@@ -15,31 +15,31 @@ else:
     _Bytes = bytes
     _Ascii = Union[bytes, str]
 
-def a2b_uu(string: _Ascii) -> bytes: ...
+def a2b_uu(__data: _Ascii) -> bytes: ...
 if sys.version_info >= (3, 7):
-    def b2a_uu(data: _Bytes, *, backtick: bool = ...) -> bytes: ...
+    def b2a_uu(__data: _Bytes, *, backtick: bool = ...) -> bytes: ...
 else:
-    def b2a_uu(data: _Bytes) -> bytes: ...
-def a2b_base64(string: _Ascii) -> bytes: ...
+    def b2a_uu(__data: _Bytes) -> bytes: ...
+def a2b_base64(__data: _Ascii) -> bytes: ...
 if sys.version_info >= (3, 6):
-    def b2a_base64(data: _Bytes, *, newline: bool = ...) -> bytes: ...
+    def b2a_base64(__data: _Bytes, *, newline: bool = ...) -> bytes: ...
 else:
-    def b2a_base64(data: _Bytes) -> bytes: ...
-def a2b_qp(string: _Ascii, header: bool = ...) -> bytes: ...
+    def b2a_base64(__data: _Bytes) -> bytes: ...
+def a2b_qp(data: _Ascii, header: bool = ...) -> bytes: ...
 def b2a_qp(data: _Bytes, quotetabs: bool = ..., istext: bool = ..., header: bool = ...) -> bytes: ...
-def a2b_hqx(string: _Ascii) -> bytes: ...
-def rledecode_hqx(data: _Bytes) -> bytes: ...
-def rlecode_hqx(data: _Bytes) -> bytes: ...
-def b2a_hqx(data: _Bytes) -> bytes: ...
-def crc_hqx(data: _Bytes, crc: int) -> int: ...
-def crc32(data: _Bytes, crc: int = ...) -> int: ...
-def b2a_hex(data: _Bytes) -> bytes: ...
+def a2b_hqx(__data: _Ascii) -> bytes: ...
+def rledecode_hqx(__data: _Bytes) -> bytes: ...
+def rlecode_hqx(__data: _Bytes) -> bytes: ...
+def b2a_hqx(__data: _Bytes) -> bytes: ...
+def crc_hqx(__data: _Bytes, __crc: int) -> int: ...
+def crc32(__data: _Bytes, __crc: int = ...) -> int: ...
+def b2a_hex(__data: _Bytes) -> bytes: ...
 if sys.version_info >= (3, 8):
     def hexlify(data: bytes, sep: Union[str, bytes] = ..., bytes_per_sep: int = ...) -> bytes: ...
 else:
-    def hexlify(data: _Bytes) -> bytes: ...
-def a2b_hex(hexstr: _Ascii) -> bytes: ...
-def unhexlify(hexlify: _Ascii) -> bytes: ...
+    def hexlify(__data: _Bytes) -> bytes: ...
+def a2b_hex(__hexstr: _Ascii) -> bytes: ...
+def unhexlify(__hexstr: _Ascii) -> bytes: ...
 
 class Error(ValueError): ...
 class Incomplete(Exception): ...
diff --git a/tests/stubtest_whitelists/py38.txt b/tests/stubtest_whitelists/py38.txt
index ba485e54c..29e4c7d98 100644
--- a/tests/stubtest_whitelists/py38.txt
+++ b/tests/stubtest_whitelists/py38.txt
@@ -39,14 +39,6 @@ asyncio.tasks.Task.set_exception
 asyncio.tasks.Task.set_name
 asyncio.tasks.Task.set_result
 bdb.Bdb.runcall
-binascii.a2b_hex
-binascii.b2a_base64
-binascii.b2a_hqx
-binascii.b2a_uu
-binascii.crc32
-binascii.crc_hqx
-binascii.rlecode_hqx
-binascii.rledecode_hqx
 builtins.bytearray.extend
 builtins.bytearray.pop
 builtins.compile
diff --git a/tests/stubtest_whitelists/py3_common.txt b/tests/stubtest_whitelists/py3_common.txt
index 4384b4041..ebbab9c33 100644
--- a/tests/stubtest_whitelists/py3_common.txt
+++ b/tests/stubtest_whitelists/py3_common.txt
@@ -86,11 +86,6 @@ base64.b32decode
 base64.b64decode
 base64.b64encode
 bdb.Bdb.__init__
-binascii.a2b_base64
-binascii.a2b_hqx
-binascii.a2b_qp
-binascii.a2b_uu
-binascii.unhexlify
 builtins.WindowsError
 builtins.bytearray.__float__
 builtins.bytearray.__int__