diff --git a/htdocs/install/mysql/migration/14.0.0-15.0.0.sql b/htdocs/install/mysql/migration/14.0.0-15.0.0.sql
index 02a18f69a40..2c460d4ab88 100644
--- a/htdocs/install/mysql/migration/14.0.0-15.0.0.sql
+++ b/htdocs/install/mysql/migration/14.0.0-15.0.0.sql
@@ -80,6 +80,8 @@ INSERT INTO llx_c_email_templates (entity, module, type_template, lang, private,
 
 -- v15
 
+ALTER TABLE llx_c_partnership_type ADD UNIQUE INDEX uk_c_partnership_type(entity, code);
+
 ALTER TABLE llx_c_holiday_types CHANGE COLUMN newByMonth newbymonth double(8,5) DEFAULT 0 NOT NULL;
 
 ALTER TABLE llx_product ADD COLUMN mandatory_period tinyint NULL DEFAULT 0;
diff --git a/htdocs/install/mysql/tables/llx_c_partnership_type.key.sql b/htdocs/install/mysql/tables/llx_c_partnership_type.key.sql
new file mode 100644
index 00000000000..c4aa0c04b0a
--- /dev/null
+++ b/htdocs/install/mysql/tables/llx_c_partnership_type.key.sql
@@ -0,0 +1,19 @@
+-- ========================================================================
+-- Copyright (C) 2021 Laurent Destailleur  <eldy@users.sourceforge.net>
+--
+-- This program is free software; you can redistribute it and/or modify
+-- it under the terms of the GNU General Public License as published by
+-- the Free Software Foundation; either version 3 of the License, or
+-- (at your option) any later version.
+--
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-- GNU General Public License for more details.
+--
+-- You should have received a copy of the GNU General Public License
+-- along with this program. If not, see <https://www.gnu.org/licenses/>.
+--
+-- ========================================================================
+
+ALTER TABLE llx_c_partnership_type ADD UNIQUE INDEX uk_c_partnership_type(entity, code);
diff --git a/htdocs/install/mysql/tables/llx_c_partnership_type.sql b/htdocs/install/mysql/tables/llx_c_partnership_type.sql
index 23d5a89e16c..d2a4a3b7549 100644
--- a/htdocs/install/mysql/tables/llx_c_partnership_type.sql
+++ b/htdocs/install/mysql/tables/llx_c_partnership_type.sql
@@ -30,6 +30,6 @@ create table llx_c_partnership_type
   entity        integer DEFAULT 1 NOT NULL,
   code          varchar(32) NOT NULL,
   label 	    varchar(64)	NOT NULL,
-  active  	    tinyint DEFAULT 1  NOT NULL
+  active  	    tinyint DEFAULT 1 NOT NULL
 )ENGINE=innodb;