diff --git a/src/browser/base/zen-components/ZenGlanceManager.mjs b/src/browser/base/zen-components/ZenGlanceManager.mjs
index 578eb8183..f8368dbed 100644
--- a/src/browser/base/zen-components/ZenGlanceManager.mjs
+++ b/src/browser/base/zen-components/ZenGlanceManager.mjs
@@ -70,7 +70,7 @@
     }
 
     getTabPosition(tab) {
-      return Math.max(gBrowser._numVisiblePinTabs, tab._tPos);
+      return Math.max(gBrowser.pinnedTabCount, tab._tPos);
     }
 
     createBrowserElement(url, currentTab, existingTab = null) {