diff --git a/search2/indexing/extractorCore.inc.php b/search2/indexing/extractorCore.inc.php
index f7e527c..161142b 100755
--- a/search2/indexing/extractorCore.inc.php
+++ b/search2/indexing/extractorCore.inc.php
@@ -351,12 +351,12 @@ abstract class ExternalDocumentExtractor extends DocumentExtractor
 	{
 		if (OS_WINDOWS)
 		{
-			 
+
 
 			$WshShell = new COM("WScript.Shell");
 			$res = $WshShell->Run($cmd, 0, true);
-			 
-			 
+
+
 			return $res == 0;
 		}
 		else
@@ -469,7 +469,8 @@ abstract class ApplicationExtractor extends ExternalDocumentExtractor
 	{
 		$sources = array('{source}','{target}');
 		$target = array($this->sourcefile, $this->targetfile);
-		$cmdline = $this->application . ' ' . str_replace($sources,$target, $this->params);
+		$escape = OS_WINDOWS?'"':'\'';
+		$cmdline = $escape . $this->application . $escape . ' ' . str_replace($sources,$target, $this->params);
 
 		return $cmdline;
 	}