diff --git a/xtoskrnl/xtoskrnl.spec b/xtoskrnl/xtoskrnl.spec
index d7c55aa..1cc1c1a 100644
--- a/xtoskrnl/xtoskrnl.spec
+++ b/xtoskrnl/xtoskrnl.spec
@@ -33,6 +33,7 @@
 @ stdcall RtlClearAllBits(ptr)
 @ stdcall RtlClearBit(ptr long)
 @ stdcall RtlClearBits(ptr long long)
+@ stdcall RtlClearSetBits(ptr long long)
 @ stdcall RtlCompareGuids(ptr ptr)
 @ stdcall RtlCompareMemory(ptr ptr long)
 @ stdcall RtlCompareString(str str long)
@@ -47,6 +48,8 @@
 @ stdcall RtlCopyString(ptr ptr long)
 @ stdcall RtlCopyWideString(ptr ptr long)
 @ stdcall RtlDivideLargeInteger(long long long ptr)
+@ stdcall RtlFindClearBits(ptr long long)
+@ stdcall RtlFindSetBits(ptr long long)
 @ stdcall RtlInitializeBitMap(ptr ptr long)
 @ stdcall RtlMoveMemory(ptr ptr long)
 @ stdcall RtlMultiplyLargeInteger(long long long)
@@ -59,6 +62,7 @@
 @ stdcall RtlSetAllBits(ptr)
 @ stdcall RtlSetBit(ptr long)
 @ stdcall RtlSetBits(ptr long long)
+@ stdcall RtlSetClearBits(ptr long long)
 @ stdcall RtlSetMemory(ptr long long)
 @ stdcall RtlStringLength(str long)
 @ stdcall RtlStringToWideString(wstr str long)