diff --git a/hosts/containers/matemat/default.nix b/hosts/containers/matemat/default.nix
index 08f399d0..ce8bac7a 100644
--- a/hosts/containers/matemat/default.nix
+++ b/hosts/containers/matemat/default.nix
@@ -11,6 +11,7 @@
       address = hostRegistry.hosts.matemat.ip4;
       prefixLength = zentralwerk.lib.config.site.net.serv.subnet4Len;
     }];
+    useDHCP = false;
   };
   networking.defaultGateway = "172.20.73.1";
   networking.firewall.allowedTCPPorts = [ 80 443 ];