diff --git a/device.cpp b/device.cpp
index e717ddd..6150186 100644
--- a/device.cpp
+++ b/device.cpp
@@ -60,7 +60,7 @@
   return menu_position < 0 ? NO_ACTION : MENU_ACTIONS[menu_position];
 }
 
-int Device::HandleMenuKey(int key, int visible) {
+int Device::HandleMenuKey(int key, bool visible) {
   if (!visible) {
     return kNoAction;
   }