diff --git a/sketch.js b/sketch.js
index 047aedf..8628fcd 100644
--- a/sketch.js
+++ b/sketch.js
@@ -1089,6 +1089,7 @@ function keyPressed() {
         }
     }
     if (keyCode == 77 /*M*/) showDebugData = !showDebugData;
+    if (keyCode == 78 /*N*/) shadows_enabled = !shadows_enabled;
 }
 function keyReleased() {
     console.log(frameCount + ' released ' + key + ' ' + keyCode);