diff --git a/core/bubbles/bubble.ts b/core/bubbles/bubble.ts
index b2e57e9f6..eaf34c741 100644
--- a/core/bubbles/bubble.ts
+++ b/core/bubbles/bubble.ts
@@ -108,7 +108,7 @@ export abstract class Bubble implements IBubble {
 
     browserEvents.conditionalBind(
       this.background,
-      'pointerDown',
+      'pointerdown',
       this,
       this.onMouseDown
     );