--- a/sbsv2/raptor/python/plugins/filter_what.py	Fri Dec 18 18:36:35 2009 +0000
+++ b/sbsv2/raptor/python/plugins/filter_what.py	Fri Dec 18 19:57:42 2009 +0000
@@ -42,7 +42,7 @@
 			if filename.startswith(self.path_prefix_to_strip):
 				filename = filename[len(self.path_prefix_to_strip):]
 			if self.path_prefix_to_add_on != None:
-				filename += self.path_prefix_to_add_on
+				filename = self.path_prefix_to_add_on + filename
 			
 		if self.check:
 			if not os.path.isfile(filename):