diff --git a/tests/src/FunctionalJavascript/WidgetTest.php b/tests/src/FunctionalJavascript/WidgetTest.php
index d4b939b..040bb85 100644
--- a/tests/src/FunctionalJavascript/WidgetTest.php
+++ b/tests/src/FunctionalJavascript/WidgetTest.php
@@ -116,7 +116,7 @@ class WidgetTest extends WebDriverTestBase {
   /**
    * Provides test data for testWidgets().
    */
-  public function providerTestWidgets() {
+  public static function providerTestWidgets() {
     return [
       ['entity_reference_autocomplete_tags'],
       ['entity_reference_autocomplete'],