diff --git a/docs/usage/config-validation.md b/docs/usage/config-validation.md
index 70baf98e53baf764c83d01adc5805480d36e6f77..e5bc4755c36f0aefc240f85c3bf9e66035ed7a6a 100644
--- a/docs/usage/config-validation.md
+++ b/docs/usage/config-validation.md
@@ -39,7 +39,7 @@ For example:
 ```console
 $ npm install --global renovate
 added 750 packages, and audited 751 packages in 51s
-$ renovate-config-validator first_config.jsonn
+$ renovate-config-validator first_config.json
  INFO: Validating first_config_.json
  INFO: Config validated successfully
 ```