diff --git a/htdocs/admin/system/database-tables.php b/htdocs/admin/system/database-tables.php
index 44019b61de2..9c1349f90e7 100644
--- a/htdocs/admin/system/database-tables.php
+++ b/htdocs/admin/system/database-tables.php
@@ -32,9 +32,6 @@ if (! defined('CSRFCHECK_WITH_TOKEN')) {
 
 // Load Dolibarr environment
 require '../../main.inc.php';
-require_once DOL_DOCUMENT_ROOT.'/core/lib/admin.lib.php';
-require_once DOL_DOCUMENT_ROOT.'/core/lib/files.lib.php';
-
 /**
  * @var Conf $conf
  * @var DoliDB $db
@@ -42,6 +39,8 @@ require_once DOL_DOCUMENT_ROOT.'/core/lib/files.lib.php';
  * @var Translate $langs
  * @var User $user
  */
+require_once DOL_DOCUMENT_ROOT.'/core/lib/admin.lib.php';
+require_once DOL_DOCUMENT_ROOT.'/core/lib/files.lib.php';
 
 $langs->load("admin");
 
@@ -57,12 +56,12 @@ $action = GETPOST('action', 'aZ09');
  * Actions
  */
 
-$sqllog = '';
+$logsql = '';
 $resultsql = true;
 
 if ($action == 'convert') {	// Convert engine into innodb
 	$sql = "ALTER TABLE ".$db->sanitize($table)." ENGINE=INNODB";
-	$sqllog .= $sql.'<br>';
+	$logsql .= $sql.'<br>';
 	$resultsql = $db->query($sql);
 }
 if ($action == 'convertutf8') {
@@ -72,14 +71,14 @@ if ($action == 'convertutf8') {
 		$collation = 'utf8_general_ci';
 	}
 	$sql = "ALTER TABLE ".$db->sanitize($table)." CHARACTER SET utf8 COLLATE ".$db->sanitize($collation);	// Set the default value on table
-	$sqllog .= $sql.'<br>';
+	$logsql .= $sql.'<br>';
 	$resql1 = $db->query($sql);
 	if (!$resql1) {
 		setEventMessages($db->lasterror(), null, 'warnings');
 		$resultsql = $resql1;
 	} else {
 		$sql = "ALTER TABLE ".$db->sanitize($table)." CONVERT TO CHARACTER SET utf8 COLLATE ".$db->sanitize($collation);	// Switch fields (may fails due to foreign key)
-		$sqllog .= $sql.'<br>';
+		$logsql .= $sql.'<br>';
 		$resql2 = $db->query($sql);
 		if (!$resql2) {
 			setEventMessages($db->lasterror(), null, 'warnings');
@@ -94,14 +93,14 @@ if ($action == 'convertutf8mb4') {
 		$collation = 'utf8mb4_general_ci';
 	}
 	$sql = "ALTER TABLE ".$db->sanitize($table)." CHARACTER SET utf8mb4 COLLATE ".$db->sanitize($collation);	// Set the default value on table
-	$sqllog .= $sql.'<br>';
+	$logsql .= $sql.'<br>';
 	$resql1 = $db->query($sql);
 	if (!$resql1) {
 		setEventMessages($db->lasterror(), null, 'warnings');
 		$resultsql = $resql1;
 	} else {
 		$sql = "ALTER TABLE ".$db->sanitize($table)." CONVERT TO CHARACTER SET utf8mb4 COLLATE ".$db->sanitize($collation);	// Switch fields (may fails due to foreign key)
-		$sqllog .= $sql.'<br>';
+		$logsql .= $sql.'<br>';
 		$resql2 = $db->query($sql);
 		if (!$resql2) {
 			setEventMessages($db->lasterror(), null, 'warnings');
@@ -111,7 +110,7 @@ if ($action == 'convertutf8mb4') {
 }
 if ($action == 'convertdynamic') {
 	$sql = "ALTER TABLE ".$db->sanitize($table)." ROW_FORMAT=DYNAMIC;";
-	$sqllog .= $sql.'<br>';
+	$logsql .= $sql.'<br>';
 	$resultsql = $db->query($sql);
 }
 
@@ -126,8 +125,8 @@ $linkback = '<a href="'.DOL_URL_ROOT.'/admin/system/database.php?restore_lastsea
 
 print load_fiche_titre($langs->trans("Tables")." ".ucfirst($conf->db->type), $linkback, 'title_setup');
 
-if ($sqllog) {
-	print info_admin($sqllog.' '.(empty($resultsql) ? ' => KO '.$db->lasterror() : ' => OK'));
+if ($logsql) {
+	print info_admin($logsql.' '.(empty($resultsql) ? ' => KO '.$db->lasterror() : ' => OK'));
 }
 
 // Define request to get table description
diff --git a/htdocs/admin/system/database.php b/htdocs/admin/system/database.php
index 4d12a2b4005..30bc2075b4e 100644
--- a/htdocs/admin/system/database.php
+++ b/htdocs/admin/system/database.php
@@ -53,27 +53,27 @@ if (!$user->admin) {
  * Actions
  */
 
-$sqllog = '';
+$logsql = '';
 $resultsql = null;
 
 if ($action == 'convertutf8unicode') {			// Test on permission already done.
 	$sql = "ALTER DATABASE ".$db->sanitize($db->database_name)." CHARACTER SET utf8 COLLATE utf8_unicode_ci";
-	$sqllog .= $sql.'<br>';
+	$logsql .= $sql.'<br>';
 	$resultsql = $db->query($sql);
 }
 if ($action == 'convertutf8mb4unicode') {		// Test on permission already done.
 	$sql = "ALTER DATABASE ".$db->sanitize($db->database_name)." CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci";
-	$sqllog .= $sql.'<br>';
+	$logsql .= $sql.'<br>';
 	$resultsql = $db->query($sql);
 }
 if ($action == 'convertutf8general') {			// Test on permission already done.
 	$sql = "ALTER DATABASE ".$db->sanitize($db->database_name)." CHARACTER SET utf8 COLLATE utf8_general_ci";
-	$sqllog .= $sql.'<br>';
+	$logsql .= $sql.'<br>';
 	$resultsql = $db->query($sql);
 }
 if ($action == 'convertutf8mb4general') {		// Test on permission already done.
 	$sql = "ALTER DATABASE ".$db->sanitize($db->database_name)." CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci";
-	$sqllog .= $sql.'<br>';
+	$logsql .= $sql.'<br>';
 	$resultsql = $db->query($sql);
 }
 
@@ -88,8 +88,8 @@ llxHeader('', '', '', '', 0, 0, '', '', '', 'mod-admin page-system_database');
 
 print load_fiche_titre($langs->trans("InfoDatabase"), '', 'title_setup');
 
-if ($sqllog) {
-	print info_admin($sqllog.' '.(empty($resultsql) ? ' => KO '.$db->lasterror() : ' => OK'));
+if ($logsql) {
+	print info_admin($logsql.' '.(empty($resultsql) ? ' => KO '.$db->lasterror() : ' => OK'));
 }
 
 // Database
diff --git a/htdocs/admin/system/dbtable.php b/htdocs/admin/system/dbtable.php
index 35f09986ddd..a9d55f691c9 100644
--- a/htdocs/admin/system/dbtable.php
+++ b/htdocs/admin/system/dbtable.php
@@ -53,12 +53,12 @@ $action = GETPOST('action', 'aZ09');
  */
 
 
-$sqllog = '';
+$logsql = '';
 $resultsql = true;
 
 if ($action == 'convertutf8') {
 	$sql = "SHOW FULL COLUMNS IN ".$db->sanitize($table);
-	$sqllog .= $sql.'<br>';
+	$logsql .= $sql.'<br>';
 
 	$resql = $db->query($sql);
 	if ($resql) {
@@ -68,7 +68,7 @@ if ($action == 'convertutf8') {
 			$row = $db->fetch_row($resql);
 			if ($row[0] == $field) {
 				$sql = "ALTER TABLE ".$db->sanitize($table)." MODIFY ".$db->sanitize($row[0])." ".$row[1]." CHARACTER SET utf8";		// We must not sanitize the $row[1]
-				$sqllog .= $sql.'<br>';
+				$logsql .= $sql.'<br>';
 
 				$db->query($sql);
 
@@ -79,7 +79,7 @@ if ($action == 'convertutf8') {
 				}
 
 				$sql = "ALTER TABLE ".$db->sanitize($table)." MODIFY ".$db->sanitize($row[0])." ".$row[1]." COLLATE ".$db->sanitize($collation);	// We must not sanitize the $row[1]
-				$sqllog .= $sql.'<br>';
+				$logsql .= $sql.'<br>';
 
 				$resql2 = $db->query($sql);
 				if (!$resql2) {
@@ -94,7 +94,7 @@ if ($action == 'convertutf8') {
 }
 if ($action == 'convertutf8mb4') {
 	$sql = "SHOW FULL COLUMNS IN ".$db->sanitize($table);
-	$sqllog .= $sql.'<br>';
+	$logsql .= $sql.'<br>';
 
 	$resql = $db->query($sql);
 	if ($resql) {
@@ -104,7 +104,7 @@ if ($action == 'convertutf8mb4') {
 			$row = $db->fetch_row($resql);
 			if ($row[0] == $field) {
 				$sql = "ALTER TABLE ".$db->sanitize($table)." MODIFY ".$db->sanitize($row[0])." ".$row[1]." CHARACTER SET utf8mb4";		// We must not sanitize the $row[1]
-				$sqllog .= $sql.'<br>';
+				$logsql .= $sql.'<br>';
 
 				$db->query($sql);
 
@@ -115,7 +115,7 @@ if ($action == 'convertutf8mb4') {
 				}
 
 				$sql = "ALTER TABLE ".$db->sanitize($table)." MODIFY ".$db->sanitize($row[0])." ".$row[1]." COLLATE ".$db->sanitize($collation);	// We must not sanitize the $row[1]
-				$sqllog .= $sql.'<br>';
+				$logsql .= $sql.'<br>';
 
 				$resql2 = $db->query($sql);
 				if (!$resql2) {
@@ -140,8 +140,8 @@ $linkback = '<a href="'.DOL_URL_ROOT.'/admin/system/database-tables.php?restore_
 
 print load_fiche_titre($langs->trans("Table")." ".$table, $linkback, 'title_setup');
 
-if ($sqllog) {
-	print info_admin($sqllog.' '.($resultsql ? ' => OK' : ' => KO '.$db->lasterror()));
+if ($logsql) {
+	print info_admin($logsql.' '.($resultsql ? ' => OK' : ' => KO '.$db->lasterror()));
 }
 
 // Define request to get table description