diff --git a/reactos/include/ddk/winddk.h b/reactos/include/ddk/winddk.h
index e4ac6eaee75..9a3c71f89eb 100644
--- a/reactos/include/ddk/winddk.h
+++ b/reactos/include/ddk/winddk.h
@@ -143,6 +143,7 @@ struct _DEVICE_DESCRIPTION;
 struct _SCATTER_GATHER_LIST;
 struct _DRIVE_LAYOUT_INFORMATION;
 struct _DRIVE_LAYOUT_INFORMATION_EX;
+struct _LOADER_PARAMETER_BLOCK;
 
 #ifndef _SECURITY_ATTRIBUTES_
 #define _SECURITY_ATTRIBUTES_