diff --git a/packages/runtime-vapor/src/apiCreateComponent.ts b/packages/runtime-vapor/src/apiCreateComponent.ts
index cb7580038..581a86079 100644
--- a/packages/runtime-vapor/src/apiCreateComponent.ts
+++ b/packages/runtime-vapor/src/apiCreateComponent.ts
@@ -12,7 +12,7 @@ import {
   walkRawProps,
 } from './componentProps'
 import { type RawSlots, isDynamicSlotFn } from './componentSlots'
-import { setInheritAttrs, withAttrs } from './componentAttrs'
+import { withAttrs } from './componentAttrs'
 import { isString } from '@vue/shared'
 import { renderEffect } from './renderEffect'
 import { normalizeBlock } from './dom/element'
@@ -90,7 +90,7 @@ function fallbackComponent(
   }
 
   if (singleRoot) {
-    setInheritAttrs(true)
+    instance.dynamicAttrs = true
   }
 
   return el
diff --git a/packages/runtime-vapor/src/componentAttrs.ts b/packages/runtime-vapor/src/componentAttrs.ts
index ce0ad86ca..7f646546f 100644
--- a/packages/runtime-vapor/src/componentAttrs.ts
+++ b/packages/runtime-vapor/src/componentAttrs.ts
@@ -60,7 +60,13 @@ export function patchAttrs(
 
       if (key === 'class' || key === 'style') {
         ;(key === 'class' ? classes : styles).push(
-          hasDynamicProps ? (getter ? value : () => value) : value,
+          hasDynamicProps
+            ? getter
+              ? value
+              : () => value
+            : getter
+              ? value()
+              : value,
         )
       } else if (getter) {
         Object.defineProperty(attrs, key, {