diff --git a/reactos/dll/win32/shell32/CDefaultContextMenu.cpp b/reactos/dll/win32/shell32/CDefaultContextMenu.cpp
index cdb97c1dd6e..56a1008c88f 100644
--- a/reactos/dll/win32/shell32/CDefaultContextMenu.cpp
+++ b/reactos/dll/win32/shell32/CDefaultContextMenu.cpp
@@ -14,9 +14,6 @@ TODO:
 
 #include "precomp.h"
 
-/* FIXME: ntifs.h */
-#define FILE_READ_ONLY_VOLUME 0x00080000
-
 WINE_DEFAULT_DEBUG_CHANNEL(dmenu);
 
 typedef struct _DynamicShellEntry_
diff --git a/reactos/include/ndk/iotypes.h b/reactos/include/ndk/iotypes.h
index f4258295fc0..97fa35f4572 100644
--- a/reactos/include/ndk/iotypes.h
+++ b/reactos/include/ndk/iotypes.h
@@ -52,6 +52,13 @@ extern POBJECT_TYPE NTSYSAPI IoDriverObjectType;
 #define SYMBOLIC_LINK_ALL_ACCESS                STANDARD_RIGHTS_REQUIRED | 0x0001
 #endif
 
+#ifdef NTOS_MODE_USER
+
+/* File System Attributes Flags */
+#define FILE_READ_ONLY_VOLUME 0x00080000
+
+#endif
+
 //
 // NtCreateFile Result Flags
 //