diff --git a/docker-compose.yml b/docker-compose.yml
index a085613..4b04fc9 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -5,16 +5,15 @@ services:
     volumes:
       - ./docker-data/dms/ssl/:/certs/
     entrypoint: /bin/sh
-    command: >
-      -c "if [ ! -f /certs/cert.pem ]; then
-        openssl req -x509 -nodes -days 3650 -newkey rsa:4096
-        -keyout /certs/key.pem -out /certs/cert.pem
-        -subj '/CN=mail.byte.trail'
-        -addext 'subjectAltName=DNS:mail.byte.trail,DNS:byte.trail';
-        echo '[+] Zertifikat erstellt';
-      else
-        echo '[i] Zertifikat existiert bereits';
-      fi"
+    command:
+      - -c
+      - |
+        if [ ! -f /certs/cert.pem ]; then
+          openssl req -x509 -nodes -days 3650 -newkey rsa:4096 -keyout /certs/key.pem -out /certs/cert.pem -subj "/CN=mail.byte.trail" -addext "subjectAltName=DNS:mail.byte.trail,DNS:byte.trail"
+          echo "[+] Zertifikat erstellt"
+        else
+          echo "[i] Zertifikat existiert bereits"
+        fi
     restart: "no"
 
   mailserver: