#15375: remove duplicated word 'child'
diff --git a/Doc/library/subprocess.rst b/Doc/library/subprocess.rst
index 5e4bcd9..3aae137 100644
--- a/Doc/library/subprocess.rst
+++ b/Doc/library/subprocess.rst
@@ -289,7 +289,7 @@
Popen(['/bin/sh', '-c', args[0], args[1], ...])
- On Windows: the :class:`Popen` class uses CreateProcess() to execute the child
+ On Windows: the :class:`Popen` class uses CreateProcess() to execute the
child program, which operates on strings. If *args* is a sequence, it will
be converted to a string in a manner described in
:ref:`converting-argument-sequence`.