diff --git a/client/app.js b/client/app.js
index a50ea4c..2de39b6 100644
--- a/client/app.js
+++ b/client/app.js
@@ -90,8 +90,7 @@ export class App extends decorate(class {}) {
     this.onBlur = this.onBlur.bind(this);
     this.onFocus = this.onFocus.bind(this);
     // Global keys.
-    this.onGlobalKeydown = this.onGlobalKeydown.bind(this);
-    window.addEventListener('keydown', this.onGlobalKeydown);
+    this.inputNormalizer.on('keyDown', this.onGlobalKeydown, this);
     this.pointingAt = [-1, -1];
     this.pointerMovementHandle = undefined;
     // Net.
@@ -236,8 +235,8 @@ export class App extends decorate(class {}) {
     this.isFocused = true;
   }
 
-  onGlobalKeydown(event) {
-    switch (event.key) {
+  onGlobalKeydown(key) {
+    switch (key) {
       case 'F2':
         this.isDebugging = !this.isDebugging;
         break;