diff --git a/api/mraa/gpio.hpp b/api/mraa/gpio.hpp
index a227615..98693ac 100644
--- a/api/mraa/gpio.hpp
+++ b/api/mraa/gpio.hpp
@@ -44,9 +44,9 @@ namespace mraa
  */
 typedef enum {
     MODE_STRONG = 0,   /**< Default. Strong High and Low */
-    MODE_PULLUP = 1,   /**< Interupt on rising & falling */
-    MODE_PULLDOWN = 2, /**< Interupt on rising only */
-    MODE_HIZ = 3       /**< Interupt on falling only */
+    MODE_PULLUP = 1,   /**< Resistive High */
+    MODE_PULLDOWN = 2, /**< Resistive Low */
+    MODE_HIZ = 3       /**< High Z State */
 } Mode;
 
 /**