diff --git a/src/Extractor/FileTextExtractor.php b/src/Extractor/FileTextExtractor.php
index 57a82ef..9289846 100644
--- a/src/Extractor/FileTextExtractor.php
+++ b/src/Extractor/FileTextExtractor.php
@@ -140,7 +140,9 @@ abstract class FileTextExtractor
         }
 
         // Remove any existing temp files with this name
-        unlink($path);
+        if (file_exists($path)) {
+            unlink($path);
+        }
 
         $bytesWritten = file_put_contents($path, $file->getStream());
         if (false === $bytesWritten) {
diff --git a/src/Extractor/PDFTextExtractor.php b/src/Extractor/PDFTextExtractor.php
index f3e914c..1ff0947 100644
--- a/src/Extractor/PDFTextExtractor.php
+++ b/src/Extractor/PDFTextExtractor.php
@@ -4,7 +4,6 @@ namespace SilverStripe\TextExtraction\Extractor;
 
 use SilverStripe\Assets\File;
 use SilverStripe\TextExtraction\Extractor\FileTextExtractor\Exception;
-use function tempnam;
 
 /**
  * Text extractor that calls pdftotext to do the conversion.
diff --git a/src/Rest/TikaRestClient.php b/src/Rest/TikaRestClient.php
index cd8b5c7..0c62f29 100644
--- a/src/Rest/TikaRestClient.php
+++ b/src/Rest/TikaRestClient.php
@@ -25,9 +25,9 @@ class TikaRestClient extends Client
     /**
      *
      * @param string $baseUrl
-     * @param array  $config
+     * @param array $config
      */
-    public function __construct($baseUrl = '', $config = null)
+    public function __construct($baseUrl = '', $config = [])
     {
         $password = Environment::getEnv('SS_TIKA_PASSWORD');
 
diff --git a/tests/TikaTextExtractorTest.php b/tests/TikaTextExtractorTest.php
index 6c8e801..7d88780 100644
--- a/tests/TikaTextExtractorTest.php
+++ b/tests/TikaTextExtractorTest.php
@@ -2,6 +2,7 @@
 
 namespace SilverStripe\TextExtraction\Tests;
 
+use SilverStripe\Assets\File;
 use SilverStripe\Dev\SapphireTest;
 use SilverStripe\TextExtraction\Extractor\TikaServerTextExtractor;
 use SilverStripe\TextExtraction\Extractor\TikaTextExtractor;
@@ -11,6 +12,8 @@ use SilverStripe\TextExtraction\Extractor\TikaTextExtractor;
  */
 class TikaTextExtractorTest extends SapphireTest
 {
+    protected $usesDatabase = true;
+
     public function testExtraction()
     {
         $extractor = new TikaTextExtractor();
@@ -19,7 +22,10 @@ class TikaTextExtractorTest extends SapphireTest
         }
 
         // Check file
-        $file = dirname(__FILE__) . '/fixtures/test1.pdf';
+        $file = new File();
+        $file->setFromLocalFile(dirname(__FILE__) . '/fixtures/test1.pdf');
+        $file->write();
+
         $content = $extractor->getContent($file);
         $this->assertContains('This is a test file with a link', $content);
 
@@ -37,7 +43,10 @@ class TikaTextExtractorTest extends SapphireTest
         }
 
         // Check file
-        $file = dirname(__FILE__) . '/fixtures/test1.pdf';
+        $file = new File();
+        $file->setFromLocalFile(dirname(__FILE__) . '/fixtures/test1.pdf');
+        $file->write();
+
         $content = $extractor->getContent($file);
         $this->assertContains('This is a test file with a link', $content);