diff --git a/xtoskrnl/ex/rundown.c b/xtoskrnl/ex/rundown.c
index 8a22722..40ee5e9 100644
--- a/xtoskrnl/ex/rundown.c
+++ b/xtoskrnl/ex/rundown.c
@@ -100,7 +100,7 @@ ExReleaseRundownProtection(IN PEX_RUNDOWN_REFERENCE Descriptor)
         {
             WaitBlock = (PEX_RUNDOWN_WAIT_BLOCK)(CurrentValue & ~0x1);
 
-            if(!RtlInterlockedDecrementLongPtr((PLONG_PTR)&WaitBlock->Count))
+            if(!RtlInterlockedDecrement64((PLONG_PTR)&WaitBlock->Count))
             {
                 KeSetEvent(&WaitBlock->WakeEvent, 0, FALSE);
             }
diff --git a/xtoskrnl/includes/rtl.h b/xtoskrnl/includes/rtl.h
index fb66e69..e14d277 100644
--- a/xtoskrnl/includes/rtl.h
+++ b/xtoskrnl/includes/rtl.h
@@ -231,7 +231,7 @@ RtlInterlockedCompareExchangePointer(IN VOLATILE PVOID *Destination,
 
 XTFASTCALL
 LONG_PTR
-RtlInterlockedDecrementLongPtr(IN VOLATILE PLONG_PTR Addend);
+RtlInterlockedDecrement64(IN VOLATILE PLONG_PTR Addend);
 
 XTFASTCALL
 PVOID
diff --git a/xtoskrnl/rtl/intrin.c b/xtoskrnl/rtl/intrin.c
index d5413f8..1ab1790 100644
--- a/xtoskrnl/rtl/intrin.c
+++ b/xtoskrnl/rtl/intrin.c
@@ -46,7 +46,7 @@ RtlInterlockedCompareExchangePointer(IN VOLATILE PVOID *Destination,
  */
 XTFASTCALL
 LONG_PTR
-RtlInterlockedDecrementLongPtr(IN VOLATILE PLONG_PTR Addend)
+RtlInterlockedDecrement64(IN VOLATILE PLONG_PTR Addend)
 {
     return (LONG_PTR)__sync_sub_and_fetch(Addend, 1);
 }