diff --git a/.changeset/smart-chefs-fail.md b/.changeset/smart-chefs-fail.md
new file mode 100644
index 00000000000..b32e8e29a6a
--- /dev/null
+++ b/.changeset/smart-chefs-fail.md
@@ -0,0 +1,5 @@
+---
+'@clerk/clerk-js': patch
+---
+
+Fix Turnstile console warning when locale is used
diff --git a/packages/clerk-js/src/ui/elements/CaptchaElement.tsx b/packages/clerk-js/src/ui/elements/CaptchaElement.tsx
index 29e040c79fc..6dc390f699d 100644
--- a/packages/clerk-js/src/ui/elements/CaptchaElement.tsx
+++ b/packages/clerk-js/src/ui/elements/CaptchaElement.tsx
@@ -18,7 +18,7 @@ export const CaptchaElement = () => {
   const { locale } = useLocalizations();
   const captchaTheme = parsedCaptcha?.theme;
   const captchaSize = parsedCaptcha?.size;
-  const captchaLanguage = parsedCaptcha?.language || locale;
+  const captchaLanguage = parsedCaptcha?.language || locale?.toLowerCase();
 
   useEffect(() => {
     if (!elementRef.current) return;