diff --git a/tests/PhpSpreadsheetTests/Calculation/Functions/LookupRef/ColumnsTest.php b/tests/PhpSpreadsheetTests/Calculation/Functions/LookupRef/ColumnsTest.php
index 71497b01..f4f9bb9e 100644
--- a/tests/PhpSpreadsheetTests/Calculation/Functions/LookupRef/ColumnsTest.php
+++ b/tests/PhpSpreadsheetTests/Calculation/Functions/LookupRef/ColumnsTest.php
@@ -33,7 +33,7 @@ class ColumnsTest extends TestCase
     /**
      * @dataProvider providerColumnsArray
      */
-    public function testColumnsArray($expectedResult, string $argument): void
+    public function testColumnsArray(int $expectedResult, string $argument): void
     {
         $calculation = Calculation::getInstance();
 
diff --git a/tests/PhpSpreadsheetTests/Calculation/Functions/LookupRef/RowsTest.php b/tests/PhpSpreadsheetTests/Calculation/Functions/LookupRef/RowsTest.php
index 52989e19..2155bdf1 100644
--- a/tests/PhpSpreadsheetTests/Calculation/Functions/LookupRef/RowsTest.php
+++ b/tests/PhpSpreadsheetTests/Calculation/Functions/LookupRef/RowsTest.php
@@ -33,7 +33,7 @@ class RowsTest extends TestCase
     /**
      * @dataProvider providerRowsArray
      */
-    public function testRowsArray($expectedResult, string $argument): void
+    public function testRowsArray(int $expectedResult, string $argument): void
     {
         $calculation = Calculation::getInstance();