1 files changed, 1 insertions, 1 deletions
diff --git a/fsck.h b/fsck.h
index e3adf9d911..6085a384f6 100644
--- a/fsck.h
+++ b/fsck.h
@@ -190,7 +190,7 @@ int fsck_object(struct object *obj, void *data, unsigned long size,
  * struct.
  */
 int fsck_buffer(const struct object_id *oid, enum object_type,
-		void *data, unsigned long size,
+		const void *data, unsigned long size,
 		struct fsck_options *options);
 
 /*