diff --git a/search2/indexing/extractorCore.inc.php b/search2/indexing/extractorCore.inc.php
index 897055f..b75c9fc 100755
--- a/search2/indexing/extractorCore.inc.php
+++ b/search2/indexing/extractorCore.inc.php
@@ -408,7 +408,7 @@ abstract class ApplicationExtractor extends ExternalDocumentExtractor
 	{
 		$sources = array('{source}','{target}');
 		$target = array($this->sourcefile, $this->targetfile);
-		$cmdline = $this->command . ' ' . str_replace($sources,$target, $params);
+		$cmdline = $this->command . ' ' . str_replace($sources,$target, $this->params);
 
 		return $cmdline;
 	}