diff --git a/hal/halx86/minihal/CMakeLists.txt b/hal/halx86/minihal/CMakeLists.txt
index e8300e7bc56..32d510f2a8b 100644
--- a/hal/halx86/minihal/CMakeLists.txt
+++ b/hal/halx86/minihal/CMakeLists.txt
@@ -46,6 +46,6 @@ endif()
 
 add_asm_files(mini_hal_asm ../generic/systimer.S)
 add_library(mini_hal ${MINI_HAL_SOURCE} ${mini_hal_asm})
-target_compile_definitions(mini_hal PRIVATE _BLDR_ _MINIHAL_)
+target_compile_definitions(mini_hal PRIVATE _MINIHAL_ _BLDR_ _NTSYSTEM_)
 add_dependencies(mini_hal psdk bugcodes asm)
 add_pch(mini_hal ../include/hal.h MINI_HAL_SOURCE)