diff --git a/.env b/.env
index 60e1cfd..452b2a8 100644
--- a/.env
+++ b/.env
@@ -63,3 +63,6 @@ APP_DEFAULT_EMAIL_TO=team@ep-reisen.de
 # MAILER_DSN=mailjet+api://PUBLIC_KEY:PRIVATE_KEY@api.mailjet.com
 # #MAILER_DSN=mailjet+smtp://PUBLIC_KEY:PRIVATE_KEY@in-v3.mailjet.com
 ###< symfony/mailjet-mailer ###
+
+BIN_GS=/usr/bin/gs
+BIN_CONVERT=/usr/bin/convert
diff --git a/config/services.yaml b/config/services.yaml
index 04fa4da..94d841f 100644
--- a/config/services.yaml
+++ b/config/services.yaml
@@ -141,8 +141,8 @@ services:
 
     App\Service\Pdf\Sanitizer:
         arguments:
-            $binGs: '/usr/bin/gs'
-            $binConvert: '/usr/bin/convert'
+            $binGs: '%env(BIN_GS)%'
+            $binConvert: '%env(BIN_CONVERT)%'
 
     App\EventListener\UploadSessionListener:
         tags: