diff --git a/lib/types.nix b/lib/types.nix
index ca6794e274c3..d1ece2402ad7 100644
--- a/lib/types.nix
+++ b/lib/types.nix
@@ -169,6 +169,9 @@ rec {
         # s32 = sign 32 4294967296;
       };
 
+    # Alias of u16 for a port number
+    port = ints.u16;
+
     float = mkOptionType rec {
         name = "float";
         description = "floating point number";