diff --git a/src/plugins/installation.md b/src/plugins/installation.md
index 1273593..edc3309 100644
--- a/src/plugins/installation.md
+++ b/src/plugins/installation.md
@@ -48,7 +48,9 @@ configured.
 All configuration values for plugins are set in the basic configuration file
 of **Mibew Messenger**, i.e. in `configs/config.yml`. If you are not familiar
 with YAML syntax, please take a look at https://en.wikipedia.org/wiki/YAML or
-any other description that can be found on the Internet.
+any other description that can be found on the Internet. You can use a YAML 
+validator, such as [YAMLline](https://yamline.com/validator/), to test your 
+configuration file and verify its structure.
 
 Plugins' configurations are stored in the `plugins` associative array, whose
 keys are fully qualified plugins' names and the values are plugins' options.