diff --git a/src/events/keyboard.js b/src/events/keyboard.js
index 34b1f231b9..f6e3b04703 100644
--- a/src/events/keyboard.js
+++ b/src/events/keyboard.js
@@ -631,7 +631,7 @@ p5.prototype._onkeyup = function(e) {
   this._setProperty('_lastKeyCodePressed', this._keyCode);
   this._downKeys[e.which] = false;
 
-  if (e.which === 91 || e.which === 93) { // Meta key codes
+  if (e.key === 'Meta') { // Meta key codes
     // When meta key is released, clear all keys pressed with it
     if (this._metaKeys) {
       this._metaKeys.forEach(key => {