diff --git a/libusbK/src/lusbk_bknd_libusb0.c b/libusbK/src/lusbk_bknd_libusb0.c
index 57333bd..6bac2a4 100644
--- a/libusbK/src/lusbk_bknd_libusb0.c
+++ b/libusbK/src/lusbk_bknd_libusb0.c
@@ -50,8 +50,6 @@ KUSB_EXP BOOL KUSB_API LUsb0_ControlTransfer(
 	int ret;
 	PKUSB_HANDLE_INTERNAL handle;
 
-	UNUSED(Overlapped);
-
 	Pub_To_Priv_UsbK(InterfaceHandle, handle, return FALSE);
 	ErrorSetAction(!PoolHandle_Inc_UsbK(handle), ERROR_RESOURCE_NOT_AVAILABLE, return FALSE, "->PoolHandle_Inc_UsbK");
 
@@ -73,6 +71,9 @@ KUSB_EXP BOOL KUSB_API LUsb0_ControlTransfer(
 
 	PoolHandle_Dec_UsbK(handle);
 
+	if (Overlapped && Overlapped.hEvent)
+		return SetEvent(Overlapped.hEvent);
+
 	return success;
 }
 
@@ -310,4 +311,4 @@ int _usb_io_sync(HANDLE dev, unsigned int code, void *out, int out_size,
 
 	CloseHandle(ol.hEvent);
 	return FALSE;
-}
\ No newline at end of file
+}