diff --git a/nixos/modules/services/networking/3proxy.nix b/nixos/modules/services/networking/3proxy.nix
index aa76e57417fb..dca17e8194ef 100644
--- a/nixos/modules/services/networking/3proxy.nix
+++ b/nixos/modules/services/networking/3proxy.nix
@@ -83,7 +83,7 @@ in
               '';
             };
             bindPort = lib.mkOption {
-              type = lib.types.nullOr lib.types.int;
+              type = lib.types.nullOr lib.types.port;
               default = null;
               example = 3128;
               description = ''
@@ -192,7 +192,7 @@ in
                       '';
                     };
                     targetPorts = lib.mkOption {
-                      type = lib.types.listOf lib.types.int;
+                      type = lib.types.listOf lib.types.port;
                       default = [ ];
                       example = [
                         80