diff --git a/postfix/compose.yaml b/postfix/compose.yaml
index 2ffd1c0..266e40e 100644
--- a/postfix/compose.yaml
+++ b/postfix/compose.yaml
@@ -23,7 +23,7 @@ services:
       ALLOWED_SENDER_DOMAINS: "japnet.nl notify.japnet.nl"
 
       # Alleen jouw LAN/VLANs mogen relayed worden
-      POSTFIX_mynetworks: "127.0.0.0/8 192.168.2.0/24 10.0.50.0/24 10.0.60.0/24"
+      MYNETWORKS: "127.0.0.0/8 192.168.2.0/24 10.0.50.0/24 10.0.60.0/24"
 
     volumes:
       # Postfix heeft schrijfruimte nodig; die doen we in named volumes