diff --git a/cache.h b/cache.h
index 08f2b81e1b..d5d78d6a51 100644
--- a/cache.h
+++ b/cache.h
@@ -1029,7 +1029,7 @@ static inline void hashclr(unsigned char *hash)
 
 static inline void oidclr(struct object_id *oid)
 {
-	hashclr(oid->hash);
+	memset(oid->hash, 0, GIT_MAX_RAWSZ);
 }