diff --git a/htdocs/install/mysql/migration/3.6.0-3.7.0.sql b/htdocs/install/mysql/migration/3.6.0-3.7.0.sql
index 0c055fc5aea..6102997c3ad 100755
--- a/htdocs/install/mysql/migration/3.6.0-3.7.0.sql
+++ b/htdocs/install/mysql/migration/3.6.0-3.7.0.sql
@@ -207,8 +207,9 @@ UPDATE llx_product SET fk_barcode_type = NULL WHERE fk_barcode_type NOT IN (SELE
 -- fk_user_author
 ALTER TABLE  llx_product_price ADD INDEX idx_product_price_fk_user_author (fk_user_author);
 UPDATE llx_product_price set fk_user_author = null where fk_user_author = 0;
+UPDATE llx_product_price set fk_user_author = null where fk_user_author not in (select rowid from llx_user);
 ALTER TABLE  llx_product_price ADD CONSTRAINT fk_product_price_user_author FOREIGN KEY (fk_user_author) REFERENCES  llx_user (rowid);
--- fk_user_author
+-- fk_product
 ALTER TABLE  llx_product_price ADD INDEX idx_product_price_fk_product (fk_product);
 DELETE from llx_product_price where fk_product NOT IN (SELECT rowid from llx_product);
 ALTER TABLE  llx_product_price ADD CONSTRAINT fk_product_price_product FOREIGN KEY (fk_product) REFERENCES  llx_product (rowid);