diff --git a/reactos/drivers/bus/serenum/detect.c b/reactos/drivers/bus/serenum/detect.c
index 8ca0f2619d4..4a7ca07755a 100644
--- a/reactos/drivers/bus/serenum/detect.c
+++ b/reactos/drivers/bus/serenum/detect.c
@@ -105,7 +105,7 @@ ReportDetectedDevice(
 	IN PUNICODE_STRING CompatibleIds)
 {
 	PDEVICE_OBJECT Pdo = NULL;
-	PPDO_DEVICE_EXTENSION PdoDeviceExtension;
+	PPDO_DEVICE_EXTENSION PdoDeviceExtension = NULL;
 	PFDO_DEVICE_EXTENSION FdoDeviceExtension;
 	NTSTATUS Status;
 	
diff --git a/reactos/drivers/bus/serenum/fdo.c b/reactos/drivers/bus/serenum/fdo.c
index 8084cd1a6e0..fbad3937c21 100644
--- a/reactos/drivers/bus/serenum/fdo.c
+++ b/reactos/drivers/bus/serenum/fdo.c
@@ -100,7 +100,7 @@ SerenumFdoQueryBusRelations(
 	PDEVICE_RELATIONS DeviceRelations;
 	ULONG NumPDO;
 	ULONG i;
-	NTSTATUS Status;
+	NTSTATUS Status = STATUS_SUCCESS;
 	
 	DeviceExtension = (PFDO_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
 	ASSERT(DeviceExtension->Common.IsFDO);