diff --git a/tests/Core/Tokenizer/BackfillFnTokenTest.php b/tests/Core/Tokenizer/BackfillFnTokenTest.php
index 2fc00cf763..0b6c3bf033 100644
--- a/tests/Core/Tokenizer/BackfillFnTokenTest.php
+++ b/tests/Core/Tokenizer/BackfillFnTokenTest.php
@@ -632,6 +632,7 @@ public function dataNotAnArrowFunction()
                 '/* testNonArrowObjectMethodCallUpper */',
                 'FN',
             ],
+            ['/* testNonArrowNamespaceOperatorFunctionCall */'],
             ['/* testLiveCoding */'],
         ];