diff --git a/applications/prometheus.nix b/applications/prometheus.nix
index 67d1ca0..e4fd5e0 100644
--- a/applications/prometheus.nix
+++ b/applications/prometheus.nix
@@ -36,7 +36,7 @@ in {
       };
     };
 
-    collecter_port = mkOption {
+    port_collecter = mkOption {
       type = types.port;
       default = 9002;
     };
@@ -48,7 +48,7 @@ in {
         enable = true;
         # most collectors are on by default see docs for more options
         enabledCollectors = ["systemd"];
-        port = cfg.collecter_port;
+        port = cfg.port_collecter;
       };
     }
     // mkIf cfg.server.enable {
@@ -60,7 +60,7 @@ in {
             job_name = "node_exporter";
             static_configs = [
               {
-                targets = (map (hostname: "${hostname}:${collecter_port}") (lib.attrsets.mapAttrsToList (server: server.deployment.hostname)) nodes) ++ cfg.other_nodes;
+                targets = (map (hostname: "${hostname}:${cfg.port_collecter}") (lib.attrsets.mapAttrsToList (server: server.deployment.hostname)) nodes) ++ cfg.other_nodes;
               }
             ];
           }
diff --git a/machines/marvin.nix b/machines/marvin.nix
index 191f0a5..e4df5dc 100644
--- a/machines/marvin.nix
+++ b/machines/marvin.nix
@@ -58,8 +58,6 @@ in {
         ip = ip_pub;
         name = name;
       };
-
-      port = 9001;
     };
   };