diff --git a/xtoskrnl/xtoskrnl.spec b/xtoskrnl/xtoskrnl.spec
index fb4de45..ea70d9c 100644
--- a/xtoskrnl/xtoskrnl.spec
+++ b/xtoskrnl/xtoskrnl.spec
@@ -30,6 +30,8 @@
 @ stdcall KeSetTargetProcessorDpc(ptr long)
 @ stdcall KeSignalCallDpcDone(ptr)
 @ stdcall KeSignalCallDpcSynchronize(ptr)
+@ stdcall RtlClearAllBits(ptr)
+@ stdcall RtlClearBit(ptr long)
 @ stdcall RtlCompareGuids(ptr ptr)
 @ stdcall RtlCompareMemory(ptr ptr long)
 @ stdcall RtlCompareString(str str long)
@@ -44,6 +46,7 @@
 @ stdcall RtlCopyString(ptr ptr long)
 @ stdcall RtlCopyWideString(ptr ptr long)
 @ stdcall RtlDivideLargeInteger(long long long ptr)
+@ stdcall RtlInitializeBitMap(ptr ptr long)
 @ stdcall RtlMoveMemory(ptr ptr long)
 @ stdcall RtlMultiplyLargeInteger(long long long)
 @ stdcall RtlReadRegisterByte(ptr)
@@ -52,9 +55,12 @@
 @ stdcall RtlReverseString(str long)
 @ stdcall RtlReverseWideString(wstr long)
 @ stdcall RtlSameMemory(ptr ptr long)
+@ stdcall RtlSetAllBits(ptr)
+@ stdcall RtlSetBit(ptr long)
 @ stdcall RtlSetMemory(ptr long long)
 @ stdcall RtlStringLength(str long)
 @ stdcall RtlStringToWideString(wstr str long)
+@ stdcall RtlTestBit(ptr long)
 @ stdcall RtlTokenizeString(str str str)
 @ stdcall RtlTokenizeWideString(wstr wstr wstr)
 @ stdcall RtlTrimLeftString(str)