diff --git a/reactos/drivers/usb/nt4compat/usbdriver/ehci.c b/reactos/drivers/usb/nt4compat/usbdriver/ehci.c
index 85ce2edafb9..f673b17bd16 100644
--- a/reactos/drivers/usb/nt4compat/usbdriver/ehci.c
+++ b/reactos/drivers/usb/nt4compat/usbdriver/ehci.c
@@ -6221,6 +6221,7 @@ generic_start_io(IN PDEVICE_OBJECT dev_obj, IN PIRP irp)
 }
 
 NTSTATUS
+NTAPI
 DriverEntry(IN PDRIVER_OBJECT DriverObject, IN PUNICODE_STRING RegistryPath)
 {
     NTSTATUS ntStatus = STATUS_SUCCESS;
diff --git a/reactos/drivers/usb/nt4compat/usbdriver/uhci.c b/reactos/drivers/usb/nt4compat/usbdriver/uhci.c
index 1e5f9ebaaf4..0fad46868be 100644
--- a/reactos/drivers/usb/nt4compat/usbdriver/uhci.c
+++ b/reactos/drivers/usb/nt4compat/usbdriver/uhci.c
@@ -3804,6 +3804,7 @@ generic_start_io(IN PDEVICE_OBJECT dev_obj, IN PIRP irp)
 }
 
 NTSTATUS
+NTAPI
 DriverEntry(IN PDRIVER_OBJECT DriverObject, IN PUNICODE_STRING RegistryPath)
 {
 #if DBG