diff --git a/pandora_console/include/functions_config.php b/pandora_console/include/functions_config.php
index 958261274a..95b9c3c30f 100644
--- a/pandora_console/include/functions_config.php
+++ b/pandora_console/include/functions_config.php
@@ -1580,9 +1580,10 @@ function config_update_config()
                     }
 
                     $history_db_string_days = get_parameter('history_db_string_days');
-                    if (is_numeric($history_db_string_days) === false
+                    if ((is_numeric($history_db_string_days) === false
                         || $history_db_string_days <= 0
-                        || config_update_value('history_db_string_days', $history_db_string_days) === false
+                        || config_update_value('history_db_string_days', $history_db_string_days) === false)
+                        && get_parameter_switch('history_db_adv', 0) === 1
                     ) {
                         $error_update[] = __('String Days');
                     }
@@ -1846,7 +1847,7 @@ function config_update_config()
         $config['error_config_update_config']['correct'] = false;
         $values = implode('<br> -', $error_update);
         $config['error_config_update_config']['message'] = sprintf(
-            __('Failed updated: the next values cannot update: <br> -%s'),
+            __('Update failed. The next values could not be updated: <br> -%s'),
             $values
         );
 
diff --git a/pandora_console/include/lib/Core/Config.php b/pandora_console/include/lib/Core/Config.php
index dbed566598..656d68f9f2 100644
--- a/pandora_console/include/lib/Core/Config.php
+++ b/pandora_console/include/lib/Core/Config.php
@@ -69,7 +69,7 @@ final class Config
             $link->options(MYSQLI_OPT_CONNECT_TIMEOUT, 2);
             $rc = mysqli_real_connect(
                 $link,
-                $$config['history_db_host'],
+                $config['history_db_host'],
                 $config['history_db_user'],
                 io_output_password($config['history_db_pass']),
                 $config['history_db_name'],
@@ -90,29 +90,31 @@ final class Config
             }
 
             ob_get_clean();
+        }
 
-            if ($config['history_db_connection'] !== false) {
-                $data = \db_get_all_rows_sql(
-                    'SELECT * FROM `tconfig`',
-                    false,
-                    false,
-                    $config['history_db_connection']
-                );
-            }
-
-            if (is_array($data) !== true) {
-                return [];
-            }
-
-            self::$settings = array_reduce(
-                $data,
-                function ($carry, $item) {
-                    $carry[$item['token']] = $item['value'];
-                    return $carry;
-                },
-                []
+        if (isset($config['history_db_connection']) === true
+            && $config['history_db_connection'] !== false
+        ) {
+            $data = \db_get_all_rows_sql(
+                'SELECT * FROM `tconfig`',
+                false,
+                false,
+                $config['history_db_connection']
             );
         }
+
+        if (is_array($data) !== true) {
+            return [];
+        }
+
+        self::$settings = array_reduce(
+            $data,
+            function ($carry, $item) {
+                $carry[$item['token']] = $item['value'];
+                return $carry;
+            },
+            []
+        );
     }