diff --git a/api/mraa/gpio.hpp b/api/mraa/gpio.hpp
index a638061..a5dc24b 100644
--- a/api/mraa/gpio.hpp
+++ b/api/mraa/gpio.hpp
@@ -188,7 +188,7 @@ class Gpio
     }
 #endif
     /**
-     * Exits callback - this call will not kill the isr thread imediatlu
+     * Exits callback - this call will not kill the isr thread immediatly
      * but only when it is out of it's critical section
      *
      * @return Result of operation