diff -r 39cf9e55ada8 -r b49684ddd543 cubicweb/server/sources/native.py
--- a/cubicweb/server/sources/native.py	Thu Oct 06 12:11:23 2016 +0200
+++ b/cubicweb/server/sources/native.py	Mon Oct 17 14:50:47 2016 +0200
@@ -1322,7 +1322,6 @@
   eid INTEGER PRIMARY KEY NOT NULL,
   type VARCHAR(64) NOT NULL
 );;
-CREATE INDEX entities_type_idx ON entities(type);;
 
 CREATE TABLE transactions (
   tx_uuid CHAR(32) PRIMARY KEY NOT NULL,