diff --git a/extentions.lua b/extentions.lua
index 073d64324..64b393be4 100644
--- a/extentions.lua
+++ b/extentions.lua
@@ -3,20 +3,24 @@
 ext = {
 	djvuRead = ";djvu;",
 	pdfRead  = ";pdf;xps;cbz;",
-	--creRead  = ";epub;txt;rtf;htm;html;mobi;prc;azw;fb2;chm;pdb;doc;tcr;zip;"
+	creRead  = ";epub;txt;rtf;htm;html;mobi;prc;azw;fb2;chm;pdb;doc;tcr;zip;"
 	-- seems to accept pdb-files for PalmDoc only
 }
 
+
 function ext:getReader(ftype)
 	local s = ";"
 	if ftype == "" then
 		return nil
-	elseif string.find(self.djvuRead,s..ftype..s) then
-		return DJVUReader
 	elseif string.find(self.pdfRead,s..ftype..s) then
 		return PDFReader
-	else
+	elseif string.find(self.djvuRead,s..ftype..s) then
+		return DJVUReader
+	elseif FileChooser.filemanager_expert_mode > FileChooser.BEGINNERS_MODE
+	or string.find(self.creRead,s..ftype..s) then
 		return CREReader
+	else
+		return nil
 	end
 end