diff --git a/tests/Template/ClassTemplateTest.php b/tests/Template/ClassTemplateTest.php
index b76c93c3e05..ee84dbce884 100644
--- a/tests/Template/ClassTemplateTest.php
+++ b/tests/Template/ClassTemplateTest.php
@@ -3826,6 +3826,22 @@ private function acceptA(A $_a): void
                         }
                     }',
             ],
+            'undefined class in function dockblock' => [
+                '<?php
+                    /**
+                     * @psalm-suppress UndefinedDocblockClass
+                     *
+                     * @param DoesNotExist<int> $baz
+                     */
+                    function foobar(DoesNotExist $baz): void {}
+
+                    /**
+                     * @psalm-suppress UndefinedDocblockClass, UndefinedClass
+                     * @var DoesNotExist
+                     */
+                    $baz = new DoesNotExist();
+                    foobar($baz);',
+            ],
         ];
     }