diff --git a/extensions/amp-story/1.0/amp-story.js b/extensions/amp-story/1.0/amp-story.js
index 5b842b8a4b02..d06e9d3f2899 100644
--- a/extensions/amp-story/1.0/amp-story.js
+++ b/extensions/amp-story/1.0/amp-story.js
@@ -1846,6 +1846,9 @@ export class AmpStory extends AMP.BaseElement {
         if (!this.backgroundBlur_) {
           this.backgroundBlur_ = new BackgroundBlur(this.win, this.element);
           this.backgroundBlur_.attach();
+          if (this.activePage_) {
+            this.backgroundBlur_.update(this.activePage_.element);
+          }
         }
         this.vsync_.mutate(() => {
           this.element.removeAttribute('desktop');