diff --git a/qgroup.c b/qgroup.c
index 5de35e2b..9d10cb89 100644
--- a/qgroup.c
+++ b/qgroup.c
@@ -1209,22 +1209,6 @@ int btrfs_show_qgroups(int fd,
 	return ret;
 }
 
-u64 btrfs_get_path_rootid(int fd)
-{
-	int  ret;
-	struct btrfs_ioctl_ino_lookup_args args;
-
-	memset(&args, 0, sizeof(args));
-	args.objectid = BTRFS_FIRST_FREE_OBJECTID;
-
-	ret = ioctl(fd, BTRFS_IOC_INO_LOOKUP, &args);
-	if (ret < 0) {
-		error("cannot perform the search: %s", strerror(errno));
-		return ret;
-	}
-	return args.treeid;
-}
-
 int btrfs_qgroup_parse_sort_string(const char *opt_arg,
 				   struct btrfs_qgroup_comparer_set **comps)
 {
diff --git a/qgroup.h b/qgroup.h
index 5b19ae7c..875fbdf3 100644
--- a/qgroup.h
+++ b/qgroup.h
@@ -79,7 +79,6 @@ enum btrfs_qgroup_filter_enum {
 
 int btrfs_qgroup_parse_sort_string(const char *opt_arg,
 				struct btrfs_qgroup_comparer_set **comps);
-u64 btrfs_get_path_rootid(int fd);
 int btrfs_show_qgroups(int fd, struct btrfs_qgroup_filter_set *,
 		       struct btrfs_qgroup_comparer_set *);
 void btrfs_qgroup_setup_print_column(enum btrfs_qgroup_column_enum column);