diff --git a/Documentation/platforms/xtensa/esp32s2/boards/esp32s2-saola-1/index.rst b/Documentation/platforms/xtensa/esp32s2/boards/esp32s2-saola-1/index.rst
index c92e6938941..656cba23f7d 100644
--- a/Documentation/platforms/xtensa/esp32s2/boards/esp32s2-saola-1/index.rst
+++ b/Documentation/platforms/xtensa/esp32s2/boards/esp32s2-saola-1/index.rst
@@ -232,6 +232,6 @@ example.
 
 To test it, just run the following::
 
-  nsh> wdog -d /dev/watchdogx
+  nsh> wdog -i /dev/watchdogx
 
-Where x in the watchdog instance.
+Where x is the watchdog instance.