diff --git a/reactos/ntoskrnl/mm/ARM3/miavl.h b/reactos/ntoskrnl/mm/ARM3/miavl.h
index 8b0ce6db62c..da698d6f70c 100644
--- a/reactos/ntoskrnl/mm/ARM3/miavl.h
+++ b/reactos/ntoskrnl/mm/ARM3/miavl.h
@@ -44,7 +44,7 @@ RtlpAvlCompareRoutine(IN PRTL_AVL_TABLE Table,
                       IN PVOID Buffer,
                       IN PVOID UserData)
 {
-    PRTL_BALANCED_LINKS CurrentNode = (PVOID)((ULONG_PTR)UserData - sizeof(LIST_ENTRY) - sizeof(RTL_BALANCED_LINKS));
+    PRTL_BALANCED_LINKS CurrentNode = (PVOID)((ULONG_PTR)UserData - sizeof(RTL_BALANCED_LINKS));
     ULONG_PTR StartingVpn = (ULONG_PTR)Buffer;
     if (StartingVpn < CurrentNode->StartingVpn)
     {