diff --git a/services/audiomanager/managersource/include/daudio_io_dev.h b/services/audiomanager/managersource/include/daudio_io_dev.h
index 4953afd14e0f721a65e39f016c998f260d750764..299a6d8a911b1d054f39a20a4dd110ae293a16f7 100644
--- a/services/audiomanager/managersource/include/daudio_io_dev.h
+++ b/services/audiomanager/managersource/include/daudio_io_dev.h
@@ -34,7 +34,7 @@ namespace OHOS {
 namespace DistributedHardware {
 class DAudioIoDev : public IDAudioHdiCallback {
 public:
-    DAudioIoDev(const std::string &devId)
+    explicit DAudioIoDev(const std::string &devId)
         : devId_(devId) {};
     ~DAudioIoDev() override = default;
     virtual int32_t InitReceiverEngine(IAVEngineProvider *providerPtr) = 0;