diff --git a/reactos/dll/directx/ksuser/ksuser.c b/reactos/dll/directx/ksuser/ksuser.c
index fe059baa126..469fa672831 100644
--- a/reactos/dll/directx/ksuser/ksuser.c
+++ b/reactos/dll/directx/ksuser/ksuser.c
@@ -20,6 +20,8 @@
 
 
 #include "ksuser.h"
+#define NDEBUG
+#include <debug.h>
 
 NTSTATUS NTAPI  KsiCreateObjectType( HANDLE hHandle, PVOID guidstr, PVOID Buffer, ULONG BufferSize, ACCESS_MASK DesiredAccess, PHANDLE phHandle);
 
diff --git a/reactos/dll/directx/ksuser/ksuser.h b/reactos/dll/directx/ksuser/ksuser.h
index 4bb54502306..5da145bf5de 100644
--- a/reactos/dll/directx/ksuser/ksuser.h
+++ b/reactos/dll/directx/ksuser/ksuser.h
@@ -1,15 +1,5 @@
-
-
-
 #define _KSDDK_
 #include <windows.h>
-#include <reactos/helper.h>
-
-
-
+#include <ntsecapi.h>
 #include <ks.h>
-#include <debug.h>
-
-
-
-
+#include <reactos/helper.h>
diff --git a/reactos/dll/win32/kernel32/misc/comm.c b/reactos/dll/win32/kernel32/misc/comm.c
index e548d1094bb..9eae700caf7 100644
--- a/reactos/dll/win32/kernel32/misc/comm.c
+++ b/reactos/dll/win32/kernel32/misc/comm.c
@@ -38,6 +38,7 @@
 #undef SERIAL_IOC_MCR_OUT1
 #undef SERIAL_IOC_MCR_OUT2
 #undef SERIAL_IOC_MCR_LOOP
+#undef IOCTL_SERIAL_LSRMST_INSERT
 #include <ntddser.h>
 
 #define NDEBUG