diff --git a/interfaces/inner_api/BUILD.gn b/interfaces/inner_api/BUILD.gn
index ac2199a79b2fc02305d542ee95dd918a2de26a00..99e6f549b210f1502126fdc626ba186a3eca6b14 100644
--- a/interfaces/inner_api/BUILD.gn
+++ b/interfaces/inner_api/BUILD.gn
@@ -42,8 +42,6 @@ ohos_shared_library("time_client") {
   ]
   deps = [ "${time_service_path}:timeservice_proxy" ]
   external_deps = [
-    "ability_runtime:abilitykit_native",
-    "ability_runtime:extensionkit_native",
     "ability_runtime:wantagent_innerkits",
     "c_utils:utils",
     "hilog:libhilog",
diff --git a/services/BUILD.gn b/services/BUILD.gn
index 4569cd562f0d26cffc537aca15ba309e4494aa0d..c1da5b0745db0eb7e5718195265ca6c6f102a077 100755
--- a/services/BUILD.gn
+++ b/services/BUILD.gn
@@ -67,6 +67,7 @@ ohos_source_set("timeservice_proxy") {
     "ipc:ipc_single",
     "samgr:samgr_proxy",
   ]
+  branch_protector_ret = "pac_ret"
   subsystem_name = "time"
   part_name = "time_service"
 }
diff --git a/services/time/src/ntp_trusted_time.cpp b/services/time/src/ntp_trusted_time.cpp
index 14dea297691f15f93f3a6d2ae7e30bc543e25c2a..6bb8a57a2c76624a03e469e7350e4e089077602d 100644
--- a/services/time/src/ntp_trusted_time.cpp
+++ b/services/time/src/ntp_trusted_time.cpp
@@ -25,7 +25,7 @@ namespace {
 constexpr int64_t TIME_RESULT_UNINITED = -1;
 constexpr int64_t HALF = 2;
 constexpr int NANO_TO_SECOND =  1000000000;
-constexpr uint64_t ONE_DAY = 86400000;
+constexpr int64_t ONE_DAY = 86400000;
 } // namespace
 
 NtpTrustedTime &NtpTrustedTime::GetInstance()
@@ -115,7 +115,7 @@ int64_t NtpTrustedTime::TimeResult::CurrentTimeMillis()
     }
     auto bootTime = std::chrono::duration_cast<std::chrono::milliseconds>(
         NtpTrustedTime::GetInstance().GetBootTimeNs().time_since_epoch()).count();
-    if (bootTime - mElapsedRealtimeMillis > ONE_DAY) {
+    if (static_cast<int64_t>(bootTime) - mElapsedRealtimeMillis > ONE_DAY) {
         Clear();
         return TIME_RESULT_UNINITED;
     }