diff --git a/app/src/main/cpp/PhoneDevice.cpp b/app/src/main/cpp/PhoneDevice.cpp
index 45d9cc6a..f08a162e 100644
--- a/app/src/main/cpp/PhoneDevice.cpp
+++ b/app/src/main/cpp/PhoneDevice.cpp
@@ -3689,11 +3689,12 @@ void CPhoneDevice::CameraCtrl(unsigned char waitTime, unsigned char delayTime, u
 {
     if(!(m_sensorsStatus && !m_cameraStatus)) {
         CPhoneDevice *pThis = this;
-        std::thread ctrlThread([pThis, waitTime, delayTime, cmdidx, channel, preset, serfile, baud,
+        string serfileStr(serfile);
+        std::thread ctrlThread([pThis, waitTime, delayTime, cmdidx, channel, preset, serfileStr, baud,
                                        addr]() mutable {
 
             pThis->OpenPTZSensors(waitTime);
-            CameraPhotoCmd(time(NULL), channel, cmdidx, 0, preset, serfile, baud,
+            CameraPhotoCmd(time(NULL), channel, cmdidx, 0, preset, serfileStr.c_str(), baud,
                            addr);
             pThis->ClosePTZSensors(delayTime);
         });