diff --git a/_episodes/03-configuration.md b/_episodes/03-configuration.md
index b550f129..9f6a20ee 100644
--- a/_episodes/03-configuration.md
+++ b/_episodes/03-configuration.md
@@ -246,10 +246,10 @@ copy the appropriate configuration file by running
 
 Additionally, it is necessary to configure
 [intake-esgf](https://intake-esgf.readthedocs.io/en/stable/configure.html).
-For this you need to copy the file `conf.yml` (see below) into the directory `~/.config/intake-esgf` and 
+For this you need to copy the file `conf.yaml` (see below) into the directory `~/.config/intake-esgf` and 
 update the `local_cache` and `esg_dataroot` with your desired download directory in this intake-esgf 
 configuration file. The updated file should look like this:
-> ## conf.yml
+> ## conf.yaml
 >
 > ```yaml 
 > additional_df_cols: []