diff --git a/frameworks/js/ani/driver_extension_ability/native/include/ani_utils.h b/frameworks/js/ani/driver_extension_ability/native/include/ani_utils.h
index 76ce63ebe587c231cd7c41963e5eac7774d7d024..32f1e132979f37f3168f389d6002698f54052e5a 100644
--- a/frameworks/js/ani/driver_extension_ability/native/include/ani_utils.h
+++ b/frameworks/js/ani/driver_extension_ability/native/include/ani_utils.h
@@ -33,15 +33,10 @@ public:
     {
         ani_object nullobj {};
 
-        ani_namespace ns;
-        if (ANI_OK != env->FindNamespace(nsName, &ns)) {
-            HILOG_ERROR("[ANI] Not found namespace %{public}s", nsName);
-            return nullobj;
-        }
-
         ani_class cls;
-        if (ANI_OK != env->Namespace_FindClass(ns, clsName, &cls)) {
-            HILOG_ERROR("[ANI] Not found class %{public}s", clsName);
+        const std::string fullClsName = std::string(nsName) + "." + clsName;
+        if (ANI_OK != env->FindClass(fullClsName.c_str(), &cls)) {
+            HILOG_ERROR("[ANI] Not found class %{public}s", fullClsName.c_str());
             return nullobj;
         }
 
diff --git a/frameworks/js/taihe/driver_extension_context/include/ani_utils.h b/frameworks/js/taihe/driver_extension_context/include/ani_utils.h
index 03cbc44f11928785559b10f2a2e7421b737023bb..16fde2a1724f49c374ba3940ed9723af1e0d3e6e 100644
--- a/frameworks/js/taihe/driver_extension_context/include/ani_utils.h
+++ b/frameworks/js/taihe/driver_extension_context/include/ani_utils.h
@@ -33,15 +33,10 @@ public:
     {
         ani_object nullobj {};
 
-        ani_namespace ns;
-        if (ANI_OK != env->FindNamespace(nsName, &ns)) {
-            std::cerr << "[ANI] Not found namespace " << nsName << std::endl;
-            return nullobj;
-        }
-
         ani_class cls;
-        if (ANI_OK != env->Namespace_FindClass(ns, clsName, &cls)) {
-            std::cerr << "[ANI] Not found class " << clsName << std::endl;
+        const std::string fullClsName = std::string(nsName) + "." + clsName;
+        if (ANI_OK != env->FindClass(fullClsName.c_str(), &cls)) {
+            std::cerr << "[ANI] Not found class " << fullClsName << std::endl;
             return nullobj;
         }
 
diff --git a/frameworks/js/taihe/src/ohos.driver.deviceManager.impl.cpp b/frameworks/js/taihe/src/ohos.driver.deviceManager.impl.cpp
index 0ae457ef8170ef67f6d75ad31b2ec44f4067a16c..38eb7a42c0320b9e15aac9ad5a0a8f58c517c69a 100644
--- a/frameworks/js/taihe/src/ohos.driver.deviceManager.impl.cpp
+++ b/frameworks/js/taihe/src/ohos.driver.deviceManager.impl.cpp
@@ -120,16 +120,10 @@ static ani_object GetCallbackResult(ani_env *env, uint64_t deviceId, const sptr<
     }
 
     ani_object result {};
-    static const char *namespaceName = "L@ohos/driver/deviceManager/deviceManager;";
-    ani_namespace ns;
-    if (ANI_OK != env->FindNamespace(namespaceName, &ns)) {
-        EDM_LOGE(MODULE_DEV_MGR, "Not found '%{public}s'", namespaceName);
-        return result;
-    }
-
     ani_class cls;
-    if (ANI_OK != env->Namespace_FindClass(ns, "LRemoteDeviceDriver_inner;", &cls)) {
-        EDM_LOGE(MODULE_DEV_MGR, "FindClass \"LRemoteDeviceDriver_inner;\" failed");
+    const char *clsName = "@ohos.driver.deviceManager.deviceManager.RemoteDeviceDriver_inner";
+    if (ANI_OK != env->FindClass(clsName, &cls)) {
+        EDM_LOGE(MODULE_DEV_MGR, "FindClass '%{public}s' failed", clsName);
         return result;
     }