diff --git a/search2/indexing/extractors/PDFExtractor.inc.php b/search2/indexing/extractors/PDFExtractor.inc.php
index b05e9e7..e2510f9 100755
--- a/search2/indexing/extractors/PDFExtractor.inc.php
+++ b/search2/indexing/extractors/PDFExtractor.inc.php
@@ -4,7 +4,7 @@ class PDFExtractor extends ApplicationExtractor
 {
 	public function __construct()
 	{
-		parent::__construct('externalBinary','pdftotext','pdftotext',_kt('PDF Text Extractor'),'-nopgbrk -enc UTF-8 {source} {target}');
+		parent::__construct('externalBinary','pdftotext','pdftotext',_kt('PDF Text Extractor'),'-nopgbrk -enc UTF-8 \'{source}\' \'{target}\'');
 	}
 
 	public function getSupportedMimeTypes()