diff --git a/internal/platform/implementation/windows/ble_v2.cc b/internal/platform/implementation/windows/ble_v2.cc
index be24f1a5..380cffea 100644
--- a/internal/platform/implementation/windows/ble_v2.cc
+++ b/internal/platform/implementation/windows/ble_v2.cc
@@ -1216,8 +1216,12 @@ void BleV2Medium::AdvertisementFoundHandler(
 
 bool BleV2Medium::GetRemotePeripheral(const std::string& mac_address,
                                       GetRemotePeripheralCallback callback) {
-  absl::MutexLock lock(&mutex_);
-  BleV2Peripheral* peripheral = GetOrCreatePeripheral(mac_address);
+  BleV2Peripheral* peripheral = nullptr;
+  {
+    absl::MutexLock lock(&mutex_);
+    BleV2Peripheral* peripheral = GetOrCreatePeripheral(mac_address);
+  }
+
   if (peripheral != nullptr && peripheral->Ok()) {
     callback(*peripheral);
     return true;
@@ -1227,8 +1231,12 @@ bool BleV2Medium::GetRemotePeripheral(const std::string& mac_address,
 
 bool BleV2Medium::GetRemotePeripheral(api::ble_v2::BlePeripheral::UniqueId id,
                                       GetRemotePeripheralCallback callback) {
-  absl::MutexLock lock(&mutex_);
-  BleV2Peripheral* peripheral = GetPeripheral(id);
+  BleV2Peripheral* peripheral = nullptr;
+  {
+    absl::MutexLock lock(&mutex_);
+    BleV2Peripheral* peripheral = GetPeripheral(id);
+  }
+
   if (peripheral == nullptr) {
     NEARBY_LOGS(WARNING) << __func__ << ": No matched peripheral device.";
     return false;