--- a/include/winbase.h
+++ b/include/winbase.h
@@ -1983,7 +1983,7 @@
 
 #if (_WIN32_WINNT >= _WIN32_WINNT_WIN2K)
 #define DISABLE_MAX_PRIVILEGE 1
-#if (NTDDK_VERSION >= NTDDI_WIN2KSP2)
+#if (NTDDI_VERSION >= NTDDI_WIN2KSP2)
 #define FILE_FLAG_FIRST_PIPE_INSTANCE	524288
 #endif
 #define LOGON_WITH_PROFILE 0x00000001