diff --git a/builtin/commit.c b/builtin/commit.c
index 0f8ddb6..32dc210 100644
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -355,7 +355,7 @@ static const char *prepare_index(int argc, const char **argv, const char *prefix
 
 		refresh_cache_or_die(refresh_flags);
 
-		if (write_locked_index(&the_index, &index_lock, CLOSE_LOCK))
+		if (write_locked_index(&the_index, &index_lock, 0))
 			die(_("unable to create temporary index"));
 
 		old_index_env = getenv(INDEX_ENVIRONMENT);
@@ -374,7 +374,7 @@ static const char *prepare_index(int argc, const char **argv, const char *prefix
 		if (update_main_cache_tree(WRITE_TREE_SILENT) == 0) {
 			if (reopen_lock_file(&index_lock) < 0)
 				die(_("unable to write index file"));
-			if (write_locked_index(&the_index, &index_lock, CLOSE_LOCK))
+			if (write_locked_index(&the_index, &index_lock, 0))
 				die(_("unable to update temporary index"));
 		} else
 			warning(_("Failed to update main cache tree"));
@@ -401,7 +401,7 @@ static const char *prepare_index(int argc, const char **argv, const char *prefix
 		add_files_to_cache(also ? prefix : NULL, &pathspec, 0);
 		refresh_cache_or_die(refresh_flags);
 		update_main_cache_tree(WRITE_TREE_SILENT);
-		if (write_locked_index(&the_index, &index_lock, CLOSE_LOCK))
+		if (write_locked_index(&the_index, &index_lock, 0))
 			die(_("unable to write new_index file"));
 		commit_style = COMMIT_NORMAL;
 		ret = get_lock_file_path(&index_lock);
@@ -474,7 +474,7 @@ static const char *prepare_index(int argc, const char **argv, const char *prefix
 	add_remove_files(&partial);
 	refresh_cache(REFRESH_QUIET);
 	update_main_cache_tree(WRITE_TREE_SILENT);
-	if (write_locked_index(&the_index, &index_lock, CLOSE_LOCK))
+	if (write_locked_index(&the_index, &index_lock, 0))
 		die(_("unable to write new_index file"));
 
 	hold_lock_file_for_update(&false_lock,
@@ -486,7 +486,7 @@ static const char *prepare_index(int argc, const char **argv, const char *prefix
 	add_remove_files(&partial);
 	refresh_cache(REFRESH_QUIET);
 
-	if (write_locked_index(&the_index, &false_lock, CLOSE_LOCK))
+	if (write_locked_index(&the_index, &false_lock, 0))
 		die(_("unable to write temporary index file"));
 
 	discard_cache();