diff --git a/pages/docs/contribution-handbook/developer-workflow/docker.mdx b/pages/docs/contribution-handbook/developer-workflow/docker.mdx
index 5ff319f..fe32f13 100644
--- a/pages/docs/contribution-handbook/developer-workflow/docker.mdx
+++ b/pages/docs/contribution-handbook/developer-workflow/docker.mdx
@@ -146,7 +146,7 @@ PHPStan performs static analysis on your PHP code. It will check for common mist
 You may need to increase the memory limit when running PHPStan, in this case we've set it to 512MB as an example which is more than enough.
 
 ```shell
-php /var/www/fossbilling/src/vendor/bin/phpstan --memory-limit-512m
+php /var/www/fossbilling/src/vendor/bin/phpstan --memory-limit=512m
 ```
 
 ## Summary