diff --git a/htdocs/install/mysql/tables/llx_categorie_fournisseur.key.sql b/htdocs/install/mysql/tables/llx_categorie_fournisseur.key.sql
new file mode 100644
index 00000000000..0e5bde492d8
--- /dev/null
+++ b/htdocs/install/mysql/tables/llx_categorie_fournisseur.key.sql
@@ -0,0 +1,24 @@
+-- ============================================================================
+-- Copyright (C) 2007 Patrick Raguin       <patrick.raguin@gmail.com>
+--
+-- 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 2 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 <http://www.gnu.org/licenses/>.
+--
+-- ============================================================================
+
+ALTER TABLE llx_categorie_fournisseur ADD PRIMARY KEY pk_categorie_fournisseur (fk_categorie, fk_societe);
+ALTER TABLE llx_categorie_fournisseur ADD INDEX idx_categorie_fournisseur_fk_categorie (fk_categorie);
+ALTER TABLE llx_categorie_fournisseur ADD INDEX idx_categorie_fournisseur_fk_societe (fk_societe);
+
+ALTER TABLE llx_categorie_fournisseur ADD CONSTRAINT fk_categorie_fournisseur_categorie_rowid FOREIGN KEY (fk_categorie) REFERENCES llx_categorie (rowid);
+ALTER TABLE llx_categorie_fournisseur ADD CONSTRAINT fk_categorie_fournisseur_fk_soc   FOREIGN KEY (fk_societe) REFERENCES llx_societe (rowid);
diff --git a/htdocs/install/mysql/tables/llx_categorie_member.key.sql b/htdocs/install/mysql/tables/llx_categorie_member.key.sql
index c85e4314344..3c00ab89fb9 100644
--- a/htdocs/install/mysql/tables/llx_categorie_member.key.sql
+++ b/htdocs/install/mysql/tables/llx_categorie_member.key.sql
@@ -18,7 +18,7 @@
 --
 -- ============================================================================
 
-ALTER TABLE llx_categorie_member ADD PRIMARY KEY (fk_categorie, fk_member);
+ALTER TABLE llx_categorie_member ADD PRIMARY KEY pk_categorie_member (fk_categorie, fk_member);
 ALTER TABLE llx_categorie_member ADD INDEX idx_categorie_member_fk_categorie (fk_categorie);
 ALTER TABLE llx_categorie_member ADD INDEX idx_categorie_member_fk_member (fk_member);
 
diff --git a/htdocs/install/mysql/tables/llx_categorie_product.key.sql b/htdocs/install/mysql/tables/llx_categorie_product.key.sql
index 1084ad1722c..227aaf1c388 100644
--- a/htdocs/install/mysql/tables/llx_categorie_product.key.sql
+++ b/htdocs/install/mysql/tables/llx_categorie_product.key.sql
@@ -18,7 +18,7 @@
 --
 -- ============================================================================
 
-ALTER TABLE llx_categorie_product ADD PRIMARY KEY (fk_categorie, fk_product);
+ALTER TABLE llx_categorie_product ADD PRIMARY KEY pk_categorie_product (fk_categorie, fk_product);
 ALTER TABLE llx_categorie_product ADD INDEX idx_categorie_product_fk_categorie (fk_categorie);
 ALTER TABLE llx_categorie_product ADD INDEX idx_categorie_product_fk_product (fk_product);
 
diff --git a/htdocs/install/mysql/tables/llx_categorie_societe.key.sql b/htdocs/install/mysql/tables/llx_categorie_societe.key.sql
index 6d833a5484a..d721e407d55 100644
--- a/htdocs/install/mysql/tables/llx_categorie_societe.key.sql
+++ b/htdocs/install/mysql/tables/llx_categorie_societe.key.sql
@@ -16,7 +16,7 @@
 --
 -- ============================================================================
 
-ALTER TABLE llx_categorie_societe ADD PRIMARY KEY (fk_categorie, fk_societe);
+ALTER TABLE llx_categorie_societe ADD PRIMARY KEY pk_categorie_societe (fk_categorie, fk_societe);
 ALTER TABLE llx_categorie_societe ADD INDEX idx_categorie_societe_fk_categorie (fk_categorie);
 ALTER TABLE llx_categorie_societe ADD INDEX idx_categorie_societe_fk_societe (fk_societe);