diff --git a/tests/documentProcessor/testExtracters.php b/tests/documentProcessor/testExtracters.php
index 413b2d8..decfe0c 100644
--- a/tests/documentProcessor/testExtracters.php
+++ b/tests/documentProcessor/testExtracters.php
@@ -115,6 +115,9 @@ class DocumentExtractorsTestCase extends KTUnitTestCase {
             $extractors[$res['name']] = $extractor;
         }
 
+        $this->assertNotNull($extractor);
+        if(empty($extractor)) return;
+
         // Extract content
         $targetFile = tempnam($this->tempPath, 'ktindexer');
 
@@ -148,4 +151,4 @@ class DocumentExtractorsTestCase extends KTUnitTestCase {
     }
 }
 
-?>
\ No newline at end of file
+?>