diff --git a/packages/uni-h5/src/helpers/cssVar.ts b/packages/uni-h5/src/helpers/cssVar.ts
index 743a2ad0ad572eaab3ccc27eb54a8d5def34e3d2..748bb42bafff1f5caddcee174e051dcf75aaa0d2 100644
--- a/packages/uni-h5/src/helpers/cssVar.ts
+++ b/packages/uni-h5/src/helpers/cssVar.ts
@@ -20,7 +20,7 @@ export function updateCurPageCssVar(pageMeta: UniApp.PageRouteMeta) {
     tabBar.shown && (windowBottomValue = parseInt(tabBar.height!))
   }
   updatePageCssVar({
-    '--window-top': normalizeWindowBottom(windowTopValue),
+    '--window-top': normalizeWindowTop(windowTopValue),
     '--window-bottom': normalizeWindowBottom(windowBottomValue),
   })
 }