diff --git a/tests/Unit/Crypt/AES/TestCase.php b/tests/Unit/Crypt/AES/TestCase.php
index 8ec6fb1e..09a732b7 100644
--- a/tests/Unit/Crypt/AES/TestCase.php
+++ b/tests/Unit/Crypt/AES/TestCase.php
@@ -178,7 +178,7 @@ abstract class TestCase extends PhpseclibTestCase
      */
     public function continuousBufferBatteryCombosWithoutSingleCombos(): array
     {
-        return array_filter(self::$continuousBufferBatteryCombos(), fn (array $continuousBufferBatteryCombo) => count($continuousBufferBatteryCombo[2]) > 1);
+        return array_filter(self::continuousBufferBatteryCombos(), fn (array $continuousBufferBatteryCombo) => count($continuousBufferBatteryCombo[2]) > 1);
     }
 
     /**