diff --git a/Test/Export/AbstractFilterTest.php b/Test/Export/AbstractFilterTest.php
index b9e6e956c..c16bfb8c0 100644
--- a/Test/Export/AbstractFilterTest.php
+++ b/Test/Export/AbstractFilterTest.php
@@ -148,7 +148,8 @@ abstract class AbstractFilterTest extends KernelTestCase
             $this->assertNotEmpty($description,
             "test that the description is not empty");
         } elseif (is_array($description)) {
-            $this->assertContainsOnly('string', $description);
+            $this->assertInternalType('string', $description[0],
+                    "test that the first element in the description array is a string");
             
             // test that the message is translated
             try {