diff --git a/src/add-ons/kernel/bus_managers/usb/Pipe.cpp b/src/add-ons/kernel/bus_managers/usb/Pipe.cpp
index 4b40d5e2a1..c4bafe2348 100644
--- a/src/add-ons/kernel/bus_managers/usb/Pipe.cpp
+++ b/src/add-ons/kernel/bus_managers/usb/Pipe.cpp
@@ -301,6 +301,7 @@ ControlPipe::~ControlPipe()
 {
 	if (fNotifySem >= 0)
 		delete_sem(fNotifySem);
+	mutex_lock(&fSendRequestLock);
 	mutex_destroy(&fSendRequestLock);
 }