diff --git a/reactos/drivers/usb/miniport/common/fdo.c b/reactos/drivers/usb/miniport/common/fdo.c
index 936bf385db5..1eb165fabb6 100644
--- a/reactos/drivers/usb/miniport/common/fdo.c
+++ b/reactos/drivers/usb/miniport/common/fdo.c
@@ -227,7 +227,7 @@ UsbMpPnpFdo(
 			{
 				case BusRelations:
 				{
-					PDEVICE_RELATIONS DeviceRelations;
+					PDEVICE_RELATIONS DeviceRelations = NULL;
 					DPRINT("USBMP: IRP_MJ_PNP / IRP_MN_QUERY_DEVICE_RELATIONS / BusRelations\n");
 					Status = UsbMpFdoQueryBusRelations(DeviceObject, &DeviceRelations);
 					Information = (ULONG_PTR)DeviceRelations;
diff --git a/reactos/drivers/usb/usbhub/fdo.c b/reactos/drivers/usb/usbhub/fdo.c
index 0d76fd3dba4..8d29846aade 100644
--- a/reactos/drivers/usb/usbhub/fdo.c
+++ b/reactos/drivers/usb/usbhub/fdo.c
@@ -252,7 +252,7 @@ UsbhubPnpFdo(
 			{
 				case BusRelations:
 				{
-					PDEVICE_RELATIONS DeviceRelations;
+					PDEVICE_RELATIONS DeviceRelations = NULL;
 					DPRINT("Usbhub: IRP_MJ_PNP / IRP_MN_QUERY_DEVICE_RELATIONS / BusRelations\n");
 					Status = UsbhubFdoQueryBusRelations(DeviceObject, &DeviceRelations);
 					Information = (ULONG_PTR)DeviceRelations;
diff --git a/reactos/drivers/usb/usbport/message.c b/reactos/drivers/usb/usbport/message.c
index ecd061d57ce..a7fe455cae9 100644
--- a/reactos/drivers/usb/usbport/message.c
+++ b/reactos/drivers/usb/usbport/message.c
@@ -569,7 +569,7 @@ void usb_sg_cancel (struct usb_sg_request *io)
 int usb_get_descriptor(struct usb_device *dev, unsigned char type, unsigned char index, void *buf, int size)
 {
 	int i = 5;
-	int result;
+	int result = 0;
 	
 	memset(buf,0,size);	// Make sure we parse really received data