diff --git a/reactos/ntoskrnl/include/internal/ke_x.h b/reactos/ntoskrnl/include/internal/ke_x.h
index e92971e51c6..7b3dcf97511 100644
--- a/reactos/ntoskrnl/include/internal/ke_x.h
+++ b/reactos/ntoskrnl/include/internal/ke_x.h
@@ -692,7 +692,7 @@ KiSelectReadyThread(IN KPRIORITY Priority,
     if (!PrioritySet) return NULL;
 
     /*  Get the highest priority possible */
-    BitScanReverse(&HighPriority, PrioritySet);
+    BitScanReverse((PULONG)&HighPriority, PrioritySet);
     ASSERT((PrioritySet & PRIORITY_MASK(HighPriority)) != 0);
     HighPriority += PriorityMask;