diff --git a/services/audiomanager/managersink/src/daudio_sink_dev.cpp b/services/audiomanager/managersink/src/daudio_sink_dev.cpp
index 5e308d3c8fa465ea64ffaba3dd8faf3c2cb30a59..1ffc9857e524b00ce26cff25a6f08b1b673efc8f 100644
--- a/services/audiomanager/managersink/src/daudio_sink_dev.cpp
+++ b/services/audiomanager/managersink/src/daudio_sink_dev.cpp
@@ -78,6 +78,7 @@ int32_t DAudioSinkDev::InitAVTransEngines(const ChannelState channelState, IAVEn
     }
 
     if (channelState == ChannelState::SPK_CONTROL_OPENED) {
+        std::lock_guard<std::mutex> devLck(spkClientMutex_);
         spkClientMap_[DEFAULT_RENDER_ID] =
             std::make_shared<DSpeakerClient>(devId_, DEFAULT_RENDER_ID, shared_from_this());
         spkClientMap_[DEFAULT_RENDER_ID]->InitReceiverEngine(providerPtr);