diff --git a/DOCUMENTATION/content/documentation/index.md b/DOCUMENTATION/content/documentation/index.md
index be4f380..80e787c 100644
--- a/DOCUMENTATION/content/documentation/index.md
+++ b/DOCUMENTATION/content/documentation/index.md
@@ -1607,7 +1607,7 @@ YAML PHP extension allows you to easily parse and create YAML structured data. I
 
 1 - Open the `.env` file
 <br>
-2 - Search for the `INSTALL_YAML` argument under the PHP-FPM container
+2 - Search for the `PHP_FPM_INSTALL_YAML` argument under the PHP-FPM container
 <br>
 3 - Set it to `true`
 <br>
diff --git a/docker-compose.yml b/docker-compose.yml
index 8369370..60e9b26 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -156,7 +156,7 @@ services:
           - INSTALL_CALENDAR=${PHP_FPM_INSTALL_CALENDAR}
           - INSTALL_FAKETIME=${PHP_FPM_INSTALL_FAKETIME}
           - INSTALL_IONCUBE=${PHP_FPM_INSTALL_IONCUBE}
-          - INSTALL_YAML=${INSTALL_YAML}
+          - INSTALL_YAML=${PHP_FPM_INSTALL_YAML}
       volumes:
         - ./php-fpm/php${PHP_VERSION}.ini:/usr/local/etc/php/php.ini
         - ${APP_CODE_PATH_HOST}:${APP_CODE_PATH_CONTAINER}
diff --git a/env-example b/env-example
index a0d5706..67f874f 100644
--- a/env-example
+++ b/env-example
@@ -162,7 +162,7 @@ PHP_FPM_INSTALL_CALENDAR=false
 PHP_FPM_INSTALL_FAKETIME=false
 PHP_FPM_INSTALL_IONCUBE=false
 PHP_FPM_FAKETIME=-0
-INSTALL_YAML=false
+PHP_FPM_INSTALL_YAML=false
 
 ### PHP_WORKER ############################################