diff --git a/xtoskrnl/xtoskrnl.spec b/xtoskrnl/xtoskrnl.spec
index 5ffc347..c45b4e6 100644
--- a/xtoskrnl/xtoskrnl.spec
+++ b/xtoskrnl/xtoskrnl.spec
@@ -4,6 +4,10 @@
 @ cdecl HlIoPortOutByte(ptr long)
 @ cdecl HlIoPortOutLong(ptr long)
 @ cdecl HlIoPortOutShort(ptr long)
+@ stdcall KeInitializeSemaphore(ptr long long)
+@ stdcall KeInitializeSpinLock(ptr)
+@ stdcall KeInitializeTimer(ptr)
+@ stdcall KeInitializeTimerEx(ptr long)
 @ stdcall RtlCompareMemory(ptr ptr long)
 @ stdcall RtlCopyMemory(ptr ptr long)
 @ stdcall RtlFillMemory(ptr long long)