1 files changed, 1 insertions, 1 deletions
diff --git a/tests/app/Module/FamilyBookChartModuleTest.php b/tests/app/Module/FamilyBookChartModuleTest.php
index a697ae8f23..f161f4366d 100644
--- a/tests/app/Module/FamilyBookChartModuleTest.php
+++ b/tests/app/Module/FamilyBookChartModuleTest.php
@@ -27,7 +27,7 @@ class FamilyBookChartModuleTest extends \Fisharebest\Webtrees\TestCase
      *
      * @return void
      */
-    public function testClassExists()
+    public function testClassExists(): void
     {
         $this->assertTrue(class_exists('\Fisharebest\Webtrees\Module\FamilyBookChartModule'));
     }