diff --git a/src/autoapp/USB/USBMain.cpp b/src/autoapp/USB/USBMain.cpp
index fefd64b..4242920 100644
--- a/src/autoapp/USB/USBMain.cpp
+++ b/src/autoapp/USB/USBMain.cpp
@@ -91,6 +91,7 @@ void USBMain::startUSBWorkers()
     threadPool_.emplace_back(usbWorker);
     threadPool_.emplace_back(usbWorker);
     threadPool_.emplace_back(usbWorker);
+    threadPool_.emplace_back(usbWorker);
 }
 
 void USBMain::startIOServiceWorkers()
@@ -104,6 +105,7 @@ void USBMain::startIOServiceWorkers()
     threadPool_.emplace_back(ioServiceWorker);
     threadPool_.emplace_back(ioServiceWorker);
     threadPool_.emplace_back(ioServiceWorker);
+    threadPool_.emplace_back(ioServiceWorker);
 }
 
 }