diff --git a/Doc/library/signal.rst b/Doc/library/signal.rst
index 05b285ed110..e1daeff48ad 100644
--- a/Doc/library/signal.rst
+++ b/Doc/library/signal.rst
@@ -117,7 +117,7 @@ The variables defined in the :mod:`signal` module are:
 
    Child process stopped or terminated.
 
-   .. availability:: Windows.
+   .. availability:: Unix.
 
 .. data:: SIGCLD