diff --git a/htdocs/install/mysql/migration/3.8.0-3.9.0.sql b/htdocs/install/mysql/migration/3.8.0-3.9.0.sql
index 83013214eb3..1b383b80624 100755
--- a/htdocs/install/mysql/migration/3.8.0-3.9.0.sql
+++ b/htdocs/install/mysql/migration/3.8.0-3.9.0.sql
@@ -69,17 +69,8 @@ ALTER TABLE llx_societe_rib MODIFY COLUMN code_banque varchar(128);
 
 ALTER TABLE llx_contrat ADD COLUMN ref_customer varchar(30);
 ALTER TABLE llx_commande ADD COLUMN fk_warehouse integer DEFAULT NULL after fk_shipping_method;
-CREATE TABLE llx_product_pricerules
-(
-    rowid INT PRIMARY KEY NOT NULL AUTO_INCREMENT,
-    level INT NOT NULL, -- Which price level is this rule for?
-    fk_level INT NOT NULL, -- Price variations are made over price of X
-    var_percent FLOAT NOT NULL, -- Price variation over based price
-    var_min_percent FLOAT NOT NULL -- Min price discount over general price
-);
 
 ALTER TABLE llx_ecm_directories MODIFY COLUMN fullpath varchar(750);
-
 ALTER TABLE llx_ecm_directories DROP INDEX idx_ecm_directories;
 ALTER TABLE llx_ecm_directories ADD UNIQUE INDEX uk_ecm_directories (label, fk_parent, entity);
 --ALTER TABLE llx_ecm_directories ADD UNIQUE INDEX uk_ecm_directories_fullpath(fullpath);
@@ -263,4 +254,15 @@ ALTER TABLE llx_budget_lines ADD CONSTRAINT fk_budget_lines_budget FOREIGN KEY (
 ALTER TABLE llx_c_typent ADD COLUMN position integer NOT NULL DEFAULT 0;
 ALTER TABLE llx_c_forme_juridique ADD COLUMN position integer NOT NULL DEFAULT 0;
 ALTER TABLE llx_c_type_fees ADD COLUMN position integer NOT NULL DEFAULT 0;
-ALTER TABLE llx_product ADD COLUMN price_autogen TINYINT(1) DEFAULT 0;
\ No newline at end of file
+
+-- NEW Level multiprice generator based on per cent variations over base price
+CREATE TABLE llx_product_pricerules
+(
+    rowid INT PRIMARY KEY NOT NULL AUTO_INCREMENT,
+    level INT NOT NULL, -- Which price level is this rule for?
+    fk_level INT NOT NULL, -- Price variations are made over price of X
+    var_percent FLOAT NOT NULL, -- Price variation over based price
+    var_min_percent FLOAT NOT NULL -- Min price discount over general price
+);
+ALTER TABLE llx_product ADD COLUMN price_autogen TINYINT(1) DEFAULT 0;
+ALTER TABLE llx_product_pricerules ADD CONSTRAINT unique_level UNIQUE (level);
\ No newline at end of file