diff --git a/data/langdb.yaml b/data/langdb.yaml
index d29c31a..524f4c3 100644
--- a/data/langdb.yaml
+++ b/data/langdb.yaml
@@ -223,7 +223,7 @@ languages:
   grc: [Grek, [EU], Ἀρχαία ἑλληνικὴ]
   gsw: [Latn, [EU], Alemannisch]
   gu: [Gujr, [AS], ગુજરાતી]
-  guc: [Latn, [AM], Wayúu]
+  guc: [Latn, [AM], wayuunaiki]
   gum: [Latn, [AM], Namtrik]
   gur: [Latn, [AF], Gurenɛ]
   guw: [Latn, [AF], gungbe]
diff --git a/data/language-data.json b/data/language-data.json
index 735152a..1a20a4a 100644
--- a/data/language-data.json
+++ b/data/language-data.json
@@ -1407,7 +1407,7 @@
             [
                 "AM"
             ],
-            "Wayúu"
+            "wayuunaiki"
         ],
         "gum": [
             "Latn",