diff --git a/docs/source/api/gpio.rst b/docs/source/api/gpio.rst
index 2f63f26e00f..b60c3798e4f 100644
--- a/docs/source/api/gpio.rst
+++ b/docs/source/api/gpio.rst
@@ -87,7 +87,7 @@ The GPIO peripheral on the ESP32 supports interruptions.
 attachInterrupt
 ***************
 
-The function ``attachInterruptArg`` is used to attach the interrupt to the defined pin.
+The function ``attachInterrupt`` is used to attach the interrupt to the defined pin.
 
 .. code-block:: arduino