diff --git a/tests/Drupal/bad/BadUnitTest.php b/tests/Drupal/bad/BadUnitTest.php
index 090430c6..59811f28 100644
--- a/tests/Drupal/bad/BadUnitTest.php
+++ b/tests/Drupal/bad/BadUnitTest.php
@@ -383,7 +383,8 @@ protected function getErrorList(string $testFile): array
                 838 => 1,
                 849 => 2,
                 860 => 2,
-                864 => 2,
+                867 => 1,
+                871 => 2,
             ];
         }//end switch
 
diff --git a/tests/Drupal/bad/bad.php b/tests/Drupal/bad/bad.php
index 58428d01..cf249d9c 100644
--- a/tests/Drupal/bad/bad.php
+++ b/tests/Drupal/bad/bad.php
@@ -861,4 +861,11 @@ function test29(
   echo "Hello";
 }
 
+/**
+ * Nullable types should be annotated.
+ */
+function test30(TestType $a = NULL) {
+  echo "Hello";
+}
+
 ?>
\ No newline at end of file
diff --git a/tests/Drupal/bad/bad.php.fixed b/tests/Drupal/bad/bad.php.fixed
index 26abaa2e..f5fd6185 100644
--- a/tests/Drupal/bad/bad.php.fixed
+++ b/tests/Drupal/bad/bad.php.fixed
@@ -915,3 +915,10 @@ function test29(
 ) {
   echo "Hello";
 }
+
+/**
+ * Nullable types should be annotated.
+ */
+function test30(?TestType $a = NULL) {
+  echo "Hello";
+}