diff --git a/src/WhisperCom/Service.cpp b/src/WhisperCom/Service.cpp
index 8fd2b6c..a8f7c2f 100644
--- a/src/WhisperCom/Service.cpp
+++ b/src/WhisperCom/Service.cpp
@@ -166,9 +166,8 @@ void WhisperCom::Service::processMessage_(const zmq::message_t &msg)
         WhisperCom::Protobuf::Message wMsg{};
         wMsg = rmsg.msg();
         std::unique_lock lk(mutexMessageQueue_);
-        mutexMessageQueue_.lock();
         messageQueue_.push(std::make_shared<WhisperCom::Protobuf::Message>(wMsg));
-        mutexMessageQueue_.unlock();
+        lk.unlock();
         condWaitMessageQueue_.notify_one();
         DLOG_S(INFO) << "received data message";
     }