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-rw-r--r--pw_string/docs.rst5
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diff --git a/pw_string/docs.rst b/pw_string/docs.rst
index c89f4ab6a..c44f5801b 100644
--- a/pw_string/docs.rst
+++ b/pw_string/docs.rst
@@ -187,3 +187,8 @@ Future work
* StringBuilder's fixed size cost can be dramatically reduced by limiting
support for 64-bit integers.
* Consider integrating with the tokenizer module.
+
+Zephyr
+======
+To enable ``pw_string`` for Zephyr add ``CONFIG_PIGWEED_STRING=y`` to the
+project's configuration.