diff --git a/hosts/auth/default.nix b/hosts/auth/default.nix
index e4ba74b..3df3a1d 100644
--- a/hosts/auth/default.nix
+++ b/hosts/auth/default.nix
@@ -14,6 +14,7 @@
   networking = {
     hostName = "auth";
     domain = lib.mkForce "test.htw.stura-dresden.de";
+    useDHCP = false;
     interfaces.eth0.ipv4.addresses = [
       {
         address = "141.56.51.96";
@@ -35,4 +36,3 @@
 
   system.stateVersion = "25.05";
 }
-
diff --git a/hosts/mail/default.nix b/hosts/mail/default.nix
index e4f81ec..fa90494 100644
--- a/hosts/mail/default.nix
+++ b/hosts/mail/default.nix
@@ -41,6 +41,7 @@ in
   networking = {
     hostName = "mail";
     domain = lib.mkForce "test.htw.stura-dresden.de";
+    useDHCP = false;
     interfaces.ens18.ipv4.addresses = [
       {
         address = "141.56.51.95";