diff --git a/tests/PhpSpreadsheetTests/Calculation/LookupRefTest.php b/tests/PhpSpreadsheetTests/Calculation/LookupRefTest.php
index 04dc0a32..6d603722 100644
--- a/tests/PhpSpreadsheetTests/Calculation/LookupRefTest.php
+++ b/tests/PhpSpreadsheetTests/Calculation/LookupRefTest.php
@@ -73,4 +73,10 @@ class LookupRefTest extends TestCase
     {
         return require 'tests/data/Calculation/LookupRef/FORMULATEXT.php';
     }
+
+    public function testFormulaTextWithoutCell(): void
+    {
+        $result = LookupRef::FORMULATEXT('A1');
+        self::assertEquals(Functions::REF(), $result);
+    }
 }