diff --git a/services/native/include/power_mgr_service.h b/services/native/include/power_mgr_service.h
index 0741f57d33f22ef0d39160d81a186be76f7defde..7bb390f213056170311fa433e7cba6198311c72d 100644
--- a/services/native/include/power_mgr_service.h
+++ b/services/native/include/power_mgr_service.h
@@ -44,6 +44,9 @@
 
 namespace OHOS {
 namespace PowerMgr {
+// Explicit specialization declaration. The class has been forward-declared in some of the headers.
+// Visible for TUs that include this header.
+template<> sptr<PowerMgrService> DelayedSpSingleton<PowerMgrService>::instance_;
 #ifdef POWER_MANAGER_ENABLE_CHARGING_TYPE_SETTING
 enum class PowerConnectStatus : int32_t {
     POWER_CONNECT_INVALID = -1,
diff --git a/services/native/src/power_mgr_service.cpp b/services/native/src/power_mgr_service.cpp
index f5b3c5638a1f55002ec18a8d6e5be8bec049697a..db60655cf17bdc9c82acd6fff28850968abba819 100644
--- a/services/native/src/power_mgr_service.cpp
+++ b/services/native/src/power_mgr_service.cpp
@@ -64,6 +64,8 @@ using namespace OHOS::AppExecFwk;
 using namespace OHOS::AAFwk;
 namespace OHOS {
 namespace PowerMgr {
+// Explicit specialization definition(an initializer is required for it to be a definition)
+template<> sptr<PowerMgrService> DelayedSpSingleton<PowerMgrService>::instance_ {};
 namespace {
 MODULE_MGR *g_moduleMgr = nullptr;
 #if (defined(__aarch64__) || defined(__x86_64__))