diff --git a/apps/dragboard/lib.js b/apps/dragboard/lib.js
index 18b7f2c6f..78ef11bd4 100644
--- a/apps/dragboard/lib.js
+++ b/apps/dragboard/lib.js
@@ -226,7 +226,7 @@ exports.input = function(options) {
     }
   };
 
-  let catchSwipe = (_,__)=>{
+  let catchSwipe = ()=>{
     E.stopEventPropagation&&E.stopEventPropagation();
   };