diff --git a/reactos/tools/mkhive/cmi.c b/reactos/tools/mkhive/cmi.c
index e6ff531913a..b95f60c5c15 100644
--- a/reactos/tools/mkhive/cmi.c
+++ b/reactos/tools/mkhive/cmi.c
@@ -176,7 +176,7 @@ CmiAddKeyToHashTable(
 	{
 		RtlMoveMemory(HashCell->List + i + 1,
 		              HashCell->List + i,
-		              (HashCell->Count - 1 - i) *
+		              (HashCell->Count - i) *
 		              sizeof(HashCell->List[0]));
 	}