diff --git a/search2/indexing/extractorCore.inc.php b/search2/indexing/extractorCore.inc.php
index ba0e5e9..c153ba6 100755
--- a/search2/indexing/extractorCore.inc.php
+++ b/search2/indexing/extractorCore.inc.php
@@ -456,7 +456,7 @@ abstract class ApplicationExtractor extends ExternalDocumentExtractor
 	{
 		$sources = array('{source}','{target}');
 		$target = array($this->sourcefile, $this->targetfile);
-		$cmdline = $this->command . ' ' . str_replace($sources,$target, $this->params);
+		$cmdline = $this->application . ' ' . str_replace($sources,$target, $this->params);
 
 		return $cmdline;
 	}
diff --git a/search2/indexing/extractors/PDFExtractor.inc.php b/search2/indexing/extractors/PDFExtractor.inc.php
index 54fb672..a6d34e9 100755
--- a/search2/indexing/extractors/PDFExtractor.inc.php
+++ b/search2/indexing/extractors/PDFExtractor.inc.php
@@ -40,7 +40,10 @@ class PDFExtractor extends ApplicationExtractor
 {
 	public function __construct()
 	{
-		parent::__construct('externalBinary','pdftotext','pdftotext',_kt('PDF Text Extractor'),'-nopgbrk -enc UTF-8 \'{source}\' \'{target}\'');
+		$config = KTConfig::getSingleton();
+		$params = $config->get('extractorParameters/pdftotext', '-nopgbrk -enc UTF-8 \'{source}\' \'{target}\'');
+
+		parent::__construct('externalBinary','pdftotext','pdftotext',_kt('PDF Text Extractor'),$params);
 	}
 
 	public function getSupportedMimeTypes()
diff --git a/search2/indexing/extractors/PSExtractor.inc.php b/search2/indexing/extractors/PSExtractor.inc.php
index 8fff6d0..fd60b74 100755
--- a/search2/indexing/extractors/PSExtractor.inc.php
+++ b/search2/indexing/extractors/PSExtractor.inc.php
@@ -40,7 +40,10 @@ class PSExtractor extends ApplicationExtractor
 {
 	public function __construct()
 	{
-		parent::__construct('externalBinary','pstotext','pstotext',_kt('PostScript Text Extractor'),'-nopgbrk -enc UTF-8 {source} {target}');
+		$config = KTConfig::getSingleton();
+		$params = $config->get('extractorParameters/pstotext', '\'{source}\' > \'{target}\'');
+
+		parent::__construct('externalBinary','pstotext','pstotext',_kt('PostScript Text Extractor'), $params);
 	}
 
 	public function getSupportedMimeTypes()
@@ -56,6 +59,7 @@ class PSExtractor extends ApplicationExtractor
 	{
 		if (OS_WINDOWS)
 		{
+			// pstotext is not available under windows, so no need to diagnose it
 			return null;
 		}
 		return parent::diagnose();