diff --git a/doc/reference.md b/doc/reference.md
index 75eb80b..213da65 100644
--- a/doc/reference.md
+++ b/doc/reference.md
@@ -370,5 +370,5 @@ This function uses the same parameters and info as the `cdb_isodistance` functio
 
 ```bash
 SELECT * FROM cdb_isochrone('010100000000000000008006C00DEB9D3C72F44340', 'car', ARRAY[300,900,12000]::integer[]);
-SELECT * FROM cdb_isodistance('010100000000000000008006C00DEB9D3C72F44340', 'walk', ARRAY[300,900]::integer[], ARRAY['mode_traffic=enabled','quality=3']::text[]);
+SELECT * FROM cdb_isochrone('010100000000000000008006C00DEB9D3C72F44340', 'walk', ARRAY[300,900]::integer[], ARRAY['mode_traffic=enabled','quality=3']::text[]);
 ```