diff --git a/lib/pixi/buttongroup.js b/lib/pixi/buttongroup.js
index f312e4a..6ec72ad 100644
--- a/lib/pixi/buttongroup.js
+++ b/lib/pixi/buttongroup.js
@@ -514,7 +514,7 @@ export default class ButtonGroup extends PIXI.Container {
                     // stack!
                     const distanceToTop = this.container.y
                     const distanceToBottom = this.opts.maxHeight - this.container.y - this.__initHeight
-                    
+
                     if (distanceToTop > 0) {
                         throwProps.y.end = 0
                     } else if (distanceToBottom > 0) {