diff --git a/phpunit/functional/Glpi/System/Requirement/DbTimezonesTest.php b/phpunit/functional/Glpi/System/Requirement/DbTimezonesTest.php
index 810feb74490..cfe8fd358f2 100644
--- a/phpunit/functional/Glpi/System/Requirement/DbTimezonesTest.php
+++ b/phpunit/functional/Glpi/System/Requirement/DbTimezonesTest.php
@@ -45,12 +45,12 @@ public function testCheckWithUnavailableMysqlDb()
             ->getMock();
 
         $db->method('request')->willReturnCallback(
-            function ($query) {
+            function ($criteria) {
                 $result = $this->getMockBuilder(\DBmysqlIterator::class)
                     ->setConstructorArgs([null])
                     ->onlyMethods(['count'])
                     ->getMock();
-                if ($query === "SHOW DATABASES LIKE 'mysql'") {
+                if ($criteria['FROM'] == 'information_schema.schemata' && $criteria['WHERE']['schema_name'] == 'mysql') {
                     $result->method('count')->willReturn(0);
                 }
                 return $result;
@@ -73,14 +73,14 @@ public function testCheckWithUnavailableTimezonenameTable()
             ->getMock();
 
         $db->method('request')->willReturnCallback(
-            function ($query) {
+            function ($criteria) {
                 $result = $this->getMockBuilder(\DBmysqlIterator::class)
                     ->setConstructorArgs([null])
                     ->onlyMethods(['count'])
                     ->getMock();
-                if ($query === "SHOW DATABASES LIKE 'mysql'") {
+                if ($criteria['FROM'] == 'information_schema.schemata' && $criteria['WHERE']['schema_name'] == 'mysql') {
                     $result->method('count')->willReturn(1);
-                } else if ($query === "SHOW TABLES FROM `mysql` LIKE 'time_zone_name'") {
+                } elseif ($criteria['FROM'] == 'information_schema.tables' && $criteria['WHERE']['table_schema'] == 'mysql') {
                     $result->method('count')->willReturn(0);
                 }
                 return $result;
@@ -103,14 +103,14 @@ public function testCheckWithTimezonenameEmptyTable()
             ->getMock();
 
         $db->method('request')->willReturnCallback(
-            function ($query) {
+            function ($criteria) {
                 $result = $this->getMockBuilder(\DBmysqlIterator::class)
                     ->setConstructorArgs([null])
                     ->onlyMethods(['count', 'current'])
                     ->getMock();
-                if ($query === "SHOW DATABASES LIKE 'mysql'") {
+                if ($criteria['FROM'] == 'information_schema.schemata' && $criteria['WHERE']['schema_name'] == 'mysql') {
                     $result->method('count')->willReturn(1);
-                } else if ($query === "SHOW TABLES FROM `mysql` LIKE 'time_zone_name'") {
+                } elseif ($criteria['FROM'] == 'information_schema.tables' && $criteria['WHERE']['table_schema'] == 'mysql') {
                     $result->method('count')->willReturn(1);
                 } else {
                     $result->method('current')->willReturn(['cpt' => 0]);
@@ -135,14 +135,14 @@ public function testCheckWithAvailableData()
             ->getMock();
 
         $db->method('request')->willReturnCallback(
-            function ($query) {
+            function ($criteria) {
                 $result = $this->getMockBuilder(\DBmysqlIterator::class)
                     ->setConstructorArgs([null])
                     ->onlyMethods(['count', 'current'])
                     ->getMock();
-                if ($query === "SHOW DATABASES LIKE 'mysql'") {
+                if ($criteria['FROM'] == 'information_schema.schemata' && $criteria['WHERE']['schema_name'] == 'mysql') {
                     $result->method('count')->willReturn(1);
-                } else if ($query === "SHOW TABLES FROM `mysql` LIKE 'time_zone_name'") {
+                } elseif ($criteria['FROM'] == 'information_schema.tables' && $criteria['WHERE']['table_schema'] == 'mysql') {
                     $result->method('count')->willReturn(1);
                 } else {
                     $result->method('current')->willReturn(['cpt' => 30]);
diff --git a/src/Glpi/System/Requirement/DbTimezones.php b/src/Glpi/System/Requirement/DbTimezones.php
index 4d3c840a0d3..ba305da9422 100644
--- a/src/Glpi/System/Requirement/DbTimezones.php
+++ b/src/Glpi/System/Requirement/DbTimezones.php
@@ -60,20 +60,27 @@ public function __construct(\DBmysql $db)
 
     protected function check()
     {
-        $mysql_db_res = $this->db->doQuery('SHOW DATABASES LIKE ' . $this->db->quoteValue('mysql'));
-        if ($this->db->numrows($mysql_db_res) === 0) {
+        $mysql_db_res = $this->db->request([
+            'FROM'   => 'information_schema.schemata',
+            'WHERE'  => [
+                'schema_name' => 'mysql'
+            ]
+        ]);
+        if ($mysql_db_res->count() === 0) {
             $this->validated = false;
             $this->validation_messages[] = __('Access to timezone database (mysql) is not allowed.');
             return;
         }
 
-        $tz_table_res = $this->db->doQuery(
-            'SHOW TABLES FROM '
-            . $this->db->quoteName('mysql')
-            . ' LIKE '
-            . $this->db->quoteValue('time_zone_name')
-        );
-        if ($this->db->numrows($tz_table_res) === 0) {
+        $tz_table_res = $this->db->request([
+            'FROM'   => 'information_schema.tables',
+            'WHERE'  => [
+                'table_schema' => 'mysql',
+                'table_type'   => 'BASE TABLE',
+                'table_name'   => ['LIKE', 'time_zone_name']
+            ]
+        ]);
+        if ($tz_table_res->count() === 0) {
             $this->validated = false;
             $this->validation_messages[] = __('Access to timezone table (mysql.time_zone_name) is not allowed.');
             return;