diff --git a/htdocs/install/upgrade.php b/htdocs/install/upgrade.php
index d1d68596a94..c2ee6e93ad4 100644
--- a/htdocs/install/upgrade.php
+++ b/htdocs/install/upgrade.php
@@ -61,7 +61,7 @@ $langs->setDefaultLang($setuplang);
 $versionfrom=GETPOST("versionfrom",'alpha',3)?GETPOST("versionfrom",'alpha',3):(empty($argv[1])?'':$argv[1]);
 $versionto=GETPOST("versionto",'alpha',3)?GETPOST("versionto",'',3):(empty($argv[2])?'':$argv[2]);
 $dirmodule=((GETPOST("dirmodule",'alpha',3) && GETPOST("dirmodule",'alpha',3) != 'ignoredbversion'))?GETPOST("dirmodule",'alpha',3):((empty($argv[3]) || $argv[3] == 'ignoredbversion')?'':$argv[3]);
-$ignoredbversion=(GETPOST('ignoredbversion','',3)=='ignoredbversion')?GETPOST('ignoredbversion','',3):((empty($argv[3]) || $argv[3] != 'ignoredbversion')?'':$argv[3]);
+$ignoredbversion=(GETPOST('ignoredbversion','alpha',3)=='ignoredbversion')?GETPOST('ignoredbversion','alpha',3):((empty($argv[3]) || $argv[3] != 'ignoredbversion')?'':$argv[3]);
 
 $langs->load("admin");
 $langs->load("install");
@@ -254,6 +254,8 @@ if (! GETPOST('action','aZ09') || preg_match('/upgrade/i',GETPOST('action','aZ09
         if (count($versioncommande) && count($versionarray)
         && versioncompare($versioncommande,$versionarray) <= 0)	// Si mysql >= 4.0
         {
+        	dolibarr_install_syslog("Clean database from bad named constraints");
+
             // Suppression vieilles contraintes sans noms et en doubles
             // Les contraintes indesirables ont un nom qui commence par 0_ ou se termine par ibfk_999
             $listtables=array(
@@ -310,6 +312,7 @@ if (! GETPOST('action','aZ09') || preg_match('/upgrade/i',GETPOST('action','aZ09
     {
         $dir = "mysql/migration/";		// We use mysql migration scripts whatever is database driver
 		if (! empty($dirmodule)) $dir=dol_buildpath('/'.$dirmodule.'/sql/',0);
+		dolibarr_install_syslog("Scan sql files for migration files in ".$dir);
 
 		// Clean last part to exclude minor version x.y.z -> x.y
         $newversionfrom=preg_replace('/(\.[0-9]+)$/i','.0',$versionfrom);