diff --git a/src/wp-includes/l10n.php b/src/wp-includes/l10n.php
index a085d4483f..67bfb1a26e 100644
--- a/src/wp-includes/l10n.php
+++ b/src/wp-includes/l10n.php
@@ -161,7 +161,7 @@ function determine_locale() {
 	 *
 	 * @since 5.0.0
 	 *
-	 * @param string $locale The locale.
+	 * @param string $determined_locale The locale.
 	 */
 	return apply_filters( 'determine_locale', $determined_locale );
 }