diff --git a/reactos/include/xdk/ntifs.template.h b/reactos/include/xdk/ntifs.template.h
index 7e77f627fc3..642193fe367 100644
--- a/reactos/include/xdk/ntifs.template.h
+++ b/reactos/include/xdk/ntifs.template.h
@@ -32,6 +32,7 @@ extern "C" {
 
 $define(UCHAR=UCHAR)
 $define(ULONG=ULONG)
+$define(USHORT=USHORT)
 
 /* Dependencies */
 #include <ntddk.h>
diff --git a/reactos/include/xdk/wdm.template.h b/reactos/include/xdk/wdm.template.h
index b323f0e2e2f..1f7b392a1a0 100644
--- a/reactos/include/xdk/wdm.template.h
+++ b/reactos/include/xdk/wdm.template.h
@@ -76,7 +76,9 @@ __drv_Mode_impl(WDM_INCLUDED)
 extern "C" {
 #endif
 
+$define(UCHAR=UCHAR)
 $define(ULONG=ULONG)
+$define(USHORT=USHORT)
 
 #if !defined(_NTHALDLL_) && !defined(_BLDR_)
 #define NTHALAPI DECLSPEC_IMPORT