diff --git a/examples/MouseController/MouseController.ino b/examples/MouseController/MouseController.ino
index 5cd726a..ef0754d 100644
--- a/examples/MouseController/MouseController.ino
+++ b/examples/MouseController/MouseController.ino
@@ -22,9 +22,9 @@ USBHost usb;
 MouseController mouse(usb);
 
 // variables for mouse button states
-boolean leftButton = false;
-boolean middleButton = false;
-boolean rightButton = false;
+bool leftButton = false;
+bool middleButton = false;
+bool rightButton = false;
 
 // This function intercepts mouse movements
 void mouseMoved() {