diff --git a/Doc/library/ctypes.rst b/Doc/library/ctypes.rst
index 282dff38c206b0..8ed6a659b4ec61 100644
--- a/Doc/library/ctypes.rst
+++ b/Doc/library/ctypes.rst
@@ -389,7 +389,7 @@ regular, non-variadic, function arguments:
 
    libc.printf.argtypes = [ctypes.c_char_p]
 
-Because specifying the attribute does inhibit portability it is advised to always
+Because specifying the attribute does not inhibit portability it is advised to always
 specify ``argtypes`` for all variadic functions.