diff --git a/Doc/library/socket.rst b/Doc/library/socket.rst
index 21453b40478231..5f795af42b812e 100644
--- a/Doc/library/socket.rst
+++ b/Doc/library/socket.rst
@@ -1527,7 +1527,7 @@ to sockets.
    Return ``True`` if socket is in blocking mode, ``False`` if in
    non-blocking.
 
-   This is equivalent to checking ``socket.gettimeout() == 0``.
+   This is equivalent to checking ``socket.gettimeout() != 0``.
 
    .. versionadded:: 3.7