diff --git a/nixos/modules/services/networking/tinc.nix b/nixos/modules/services/networking/tinc.nix
index 9bc019039e0..31731b60d48 100644
--- a/nixos/modules/services/networking/tinc.nix
+++ b/nixos/modules/services/networking/tinc.nix
@@ -383,9 +383,9 @@ in
         };
         preStart = ''
           mkdir -p /etc/tinc/${network}/hosts
-          chown tinc:${network} /etc/tinc/${network}/hosts
+          chown tinc.${network} /etc/tinc/${network}/hosts
           mkdir -p /etc/tinc/${network}/invitations
-          chown tinc:${network} /etc/tinc/${network}/invitations
+          chown tinc.${network} /etc/tinc/${network}/invitations
 
           # Determine how we should generate our keys
           if type tinc >/dev/null 2>&1; then