diff --git a/htdocs/install/mysql/migration/3.5.0-3.6.0.sql b/htdocs/install/mysql/migration/3.5.0-3.6.0.sql
index 6a189c4c756..65f8064f366 100755
--- a/htdocs/install/mysql/migration/3.5.0-3.6.0.sql
+++ b/htdocs/install/mysql/migration/3.5.0-3.6.0.sql
@@ -24,5 +24,6 @@ ALTER TABLE  `llx_opensurvey_sondage` DROP INDEX  `idx_id_sondage_admin` ;
 ALTER TABLE  `llx_opensurvey_sondage` DROP COLUMN `id_sondage_admin` ;
 ALTER TABLE  `llx_opensurvey_sondage` DROP COLUMN `canedit` ;
 ALTER TABLE  `llx_opensurvey_sondage` ADD COLUMN `allow_spy` TINYINT( 1 ) UNSIGNED NOT NULL AFTER  `allow_comments` ;
-ALTER TABLE  `llx_opensurvey_sondage` DROP  `origin` ;
-ALTER TABLE  `llx_opensurvey_sondage` ADD  `fk_user_creat` INT( 11 ) UNSIGNED NOT NULL AFTER  `nom_admin` ;
\ No newline at end of file
+ALTER TABLE  `llx_opensurvey_sondage` DROP COLUMN `origin` ;
+ALTER TABLE  `llx_opensurvey_sondage` ADD COLUMN `fk_user_creat` INT( 11 ) UNSIGNED NOT NULL AFTER  `nom_admin` ;
+ALTER TABLE  `llx_opensurvey_sondage` CHANGE COLUMN `mailsonde`  `mailsonde` TINYINT( 1 ) UNSIGNED NOT NULL DEFAULT  '0';
\ No newline at end of file
diff --git a/htdocs/install/mysql/tables/llx_opensurvey_sondage.sql b/htdocs/install/mysql/tables/llx_opensurvey_sondage.sql
index db1231588f3..6301c22a2b3 100644
--- a/htdocs/install/mysql/tables/llx_opensurvey_sondage.sql
+++ b/htdocs/install/mysql/tables/llx_opensurvey_sondage.sql
@@ -24,7 +24,7 @@ CREATE TABLE llx_opensurvey_sondage (
        titre TEXT,
        date_fin DATETIME,
        format VARCHAR(2),
-       mailsonde varchar(2) DEFAULT '0',
+       mailsonde TINYINT( 1 ) UNSIGNED NOT NULL DEFAULT '0',
        allow_comments TINYINT(1) unsigned NOT NULL DEFAULT 1,
 	   allow_spy TINYINT(1) unsigned NOT NULL DEFAULT 1,
        tms TIMESTAMP,