diff --git a/data/langdb.yaml b/data/langdb.yaml
index d08f9ed..06862ec 100644
--- a/data/langdb.yaml
+++ b/data/langdb.yaml
@@ -295,7 +295,7 @@ languages:
  # CLDR uses ku-latn and ku-arab. Latin is more common and is used in Wikipedia.
   ku: [ku-latn]
   ku-arab: [Arab, [EU, ME], كوردي]
-  ku-latn: [Latn, [EU, ME], Kurdî]
+  ku-latn: [Latn, [EU, ME], kurdî]
   kum: [Cyrl, [EU], къумукъ]
   kv: [Cyrl, [EU], коми]
   kw: [Latn, [EU], kernowek]
diff --git a/language-data.json b/language-data.json
index a09bf87..b240f14 100644
--- a/language-data.json
+++ b/language-data.json
@@ -1868,7 +1868,7 @@
                 "EU",
                 "ME"
             ],
-            "Kurdî"
+            "kurdî"
         ],
         "kum": [
             "Cyrl",