diff --git a/yukihookapi/src/api/kotlin/com/highcapable/yukihookapi/hook/xposed/parasitic/AppParasitics.kt b/yukihookapi/src/api/kotlin/com/highcapable/yukihookapi/hook/xposed/parasitic/AppParasitics.kt
index 78d9f5e6..943ebb91 100644
--- a/yukihookapi/src/api/kotlin/com/highcapable/yukihookapi/hook/xposed/parasitic/AppParasitics.kt
+++ b/yukihookapi/src/api/kotlin/com/highcapable/yukihookapi/hook/xposed/parasitic/AppParasitics.kt
@@ -334,7 +334,7 @@ internal object AppParasitics {
             }.getOrNull()?.also { default ->
                 SingletonClass.field { name = "mInstance" }.ignored().result {
                     get(default).apply { any()?.also { set(IActivityManagerProxy.wrapper(IActivityManagerClass, it)) } }
-                    ActivityTaskManagerClass.field { name = "IActivityTaskManagerSingleton" }.ignored().get().any().also { singleton ->
+                    ActivityTaskManagerClass?.field { name = "IActivityTaskManagerSingleton" }?.ignored()?.get()?.any()?.also { singleton ->
                         SingletonClass.method { name = "get" }.ignored().get(singleton).call()
                         get(singleton).apply { any()?.also { set(IActivityManagerProxy.wrapper(IActivityTaskManagerClass, it)) } }
                     }
diff --git a/yukihookapi/src/api/kotlin/com/highcapable/yukihookapi/hook/xposed/parasitic/activity/delegate/IActivityManagerProxy.kt b/yukihookapi/src/api/kotlin/com/highcapable/yukihookapi/hook/xposed/parasitic/activity/delegate/IActivityManagerProxy.kt
index 3c0e2f93..b46bc7c7 100644
--- a/yukihookapi/src/api/kotlin/com/highcapable/yukihookapi/hook/xposed/parasitic/activity/delegate/IActivityManagerProxy.kt
+++ b/yukihookapi/src/api/kotlin/com/highcapable/yukihookapi/hook/xposed/parasitic/activity/delegate/IActivityManagerProxy.kt
@@ -52,7 +52,7 @@ internal class IActivityManagerProxy private constructor(private val baseInstanc
          * @param instance 代理的目标实例
          * @return [Any] 代理包装后的实例
          */
-        internal fun wrapper(clazz: Class<*>, instance: Any) =
+        internal fun wrapper(clazz: Class<*>?, instance: Any) =
             Proxy.newProxyInstance(AppParasitics.baseClassLoader, arrayOf(clazz), IActivityManagerProxy(instance))
     }