diff --git a/consts.js b/consts.js
index 3257ea33..427f1e7c 100644
--- a/consts.js
+++ b/consts.js
@@ -100,6 +100,10 @@ var thirteenStrings = [
 
     "dertien", // Afrikaans / Dutch
     "dertiendertien", // Double Dutch
+    "seri-un-teng", // Belter creole
+    "seriunteng",
+    "serí-un-teng",
+    "seríunteng",
     "тринадесет", // Bulgarian
     "тринайсет", // Also Bulgarian
     "tretze", // Catalan
diff --git a/test.js b/test.js
index 9aa834a7..f8894922 100644
--- a/test.js
+++ b/test.js
@@ -53,6 +53,10 @@ tap.equal(is("thirte3n").thirteen(), true);
 // Languages tests
 tap.equal(is("dertien").thirteen(), true); // Afrikaans / Dutch
 tap.equal(is("dertiendertien").thirteen(), true); // Double Dutch
+tap.equal(is("seri-un-teng").thirteen(), true); // Belter creole
+tap.equal(is("seriunteng").thirteen(), true);
+tap.equal(is("serí-un-teng").thirteen(), true);
+tap.equal(is("seríunteng").thirteen(), true);
 tap.equal(is("тринадесет").thirteen(), true); // Bulgarian
 tap.equal(is("тринайсет").thirteen(), true); // Also Bulgarian
 tap.equal(is("tretze").thirteen(), true); // Catalan