diff --git a/src/wp-admin/includes/class-wp-upgrader.php b/src/wp-admin/includes/class-wp-upgrader.php
index 019bb47a70..235df514c1 100644
--- a/src/wp-admin/includes/class-wp-upgrader.php
+++ b/src/wp-admin/includes/class-wp-upgrader.php
@@ -1900,7 +1900,7 @@ class Language_Pack_Upgrader extends WP_Upgrader {
 		// Remove any existing upgrade filters from the plugin/theme upgraders #WP29425 & #WP29230
 		remove_all_filters( 'upgrader_pre_install' );
 		remove_all_filters( 'upgrader_clear_destination' );
-		remove_all_filterS( 'upgrader_post_install' );
+		remove_all_filters( 'upgrader_post_install' );
 		remove_all_filters( 'upgrader_source_selection' );
 
 		add_filter( 'upgrader_source_selection', array( $this, 'check_package' ), 10, 2 );