diff --git a/README.md b/README.md
index 03f8113..14af637 100644
--- a/README.md
+++ b/README.md
@@ -30,13 +30,13 @@ dav:
   user: odoo2carddav
   password: <password for the dav server>
   # If true, then contacts which exists on the carddav server, but not in odoo will be deleted
-  delete: True
+  delete: true
 
 path:
   # Local directory where the script will build vcards. Defaults is to use mkdtemp using /tmp/odoo2carddav.XXXXX as template
   workdir: /tmp/odoo2carddav
   # If True, vcards won't be deleted from the workdir when the script is finished
-  keep_vcard: True
+  keep_vcard: true
 ```
 
 If odoo.password or dav.password is not defined, it'll be prompted when you run the script.
diff --git a/config.yml.sample b/config.yml.sample
index 61f9e4b..fabef96 100644
--- a/config.yml.sample
+++ b/config.yml.sample
@@ -12,8 +12,8 @@ odoo:
   database: odoo
   # A list of filters to limit contacts returned by odoo
   # Note : filters can only be set in a config file (not available as env var or cli arg)
-  # Also, if you need to set a False value, use 0, else perl will interpret False as a string,
-  # which will evaluate as True (for example, use ["is_company", "=", 0])
+  # Also, if you need to set a false value, use 0, else perl will interpret false as a string,
+  # which will evaluate as true (for example, use ["is_company", "=", 0])
   filters:
     - ["country_code", "=", "FR"]
     - ["name", "ilike", "berteaud"]
@@ -25,11 +25,11 @@ dav:
   user: odoo2carddav
   password: <password for the dav server>
   # If true, then contacts which exists on the carddav server, but not in odoo will be deleted
-  delete: True
+  delete: true
 
 path:
   # Local directory where the script will build vcards. Defaults is to use mkdtemp using /tmp/odoo2carddav.XXXXX as template
   workdir: /tmp/odoo2carddav
   # If True, vcards won't be deleted from the workdir when the script is finished
-  keep_vcard: True
+  keep_vcard: true