diff --git a/src/components/timeline/timeline.js b/src/components/timeline/timeline.js
index 655bfb3faf..c45f89470d 100644
--- a/src/components/timeline/timeline.js
+++ b/src/components/timeline/timeline.js
@@ -132,7 +132,9 @@ const Timeline = {
       }
       if (count > 0) {
         // only 'stream' them when you're scrolled to the top
-        if (window.pageYOffset < 15 &&
+        const doc = document.documentElement
+        const top = (window.pageYOffset || doc.scrollTop) - (doc.clientTop || 0)
+        if (top < 15 &&
             !this.paused &&
             !(this.unfocused && this.$store.state.config.pauseOnUnfocused)
            ) {