diff --git "a/include/class-mw\\API\\Exception.php" "b/include/class-mw\\API\\Exception.php"
index 66780e5..0ad1f36 100644
--- "a/include/class-mw\\API\\Exception.php"
+++ "b/include/class-mw\\API\\Exception.php"
@@ -1,113 +1,114 @@
 <?php
 # boz-mw - Another MediaWiki API handler in PHP
 # Copyright (C) 2018, 2019, 2020, 2021 Valerio Bozzolan
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 # GNU Affero General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 
 # MediaWiki API
 namespace mw\API;
 
 /**
  * Generic API exception class
  */
 class Exception extends \Exception {
 
 	/**
 	 * API error object
 	 *
 	 * @var object
 	 */
 	private $apiError;
 
 	/**
 	 * Constructor
 	 *
 	 * @param $api_error object The complete error
 	 * @param $code int
 	 * @param $previous object
 	 */
 	public function __construct( $api_error, $code = 0, Exception $previous = null ) {
 		$this->apiError = $api_error;
 		parent::__construct(
 			sprintf(
 				"API error code: '%s' info: '%s'",
 				$this->getApiErrorCode(),
 				$this->getApiErrorInfo()
 			),
 			$code,
 			$previous
 		);
 	}
 
 	/**
 	 * Create a specific exception from a generic API error
 	 *
 	 * @param $api_error object The complete error
 	 * @return self
 	 */
 	public static function createFromApiError( $api_error ) {
 		$known_exceptions = [
 			BadTokenException        ::class,
 			MaxLagException          ::class,
 			EditConflictException    ::class,
 			ArticleExistsException   ::class,
 			MissingTitleException    ::class,
 			ProtectedPageException   ::class,
 			PermissionDeniedException::class,
 			ReadOnlyException        ::class,
 			ReadApiDeniedException   ::class,
 			PageCannotExistException ::class,
+			FailedSaveException      ::class,
 
 			// Wikibase related
 			NoSuchEntityException      ::class,
 			ModificationFailedException::class,
 		];
 		$exception = new self( $api_error );
 		$code = $exception->getApiErrorCode();
 		foreach( $known_exceptions as $known_exception_name ) {
 			if( $known_exception_name::API_ERROR_CODE === $code ) {
 				$exception = new $known_exception_name( $api_error );
 				break;
 			}
 		}
 		return $exception;
 	}
 
 	/**
 	 * Get the complete error object
 	 *
 	 * @return object
 	 */
 	public function getApiError() {
 		return $this->apiError;
 	}
 
 	/**
 	 * Get the API error code
 	 *
 	 * @return string
 	 */
 	public function getApiErrorCode() {
 		return $this->getApiError()->code;
 	}
 
 	/**
 	 * Get the API error info
 	 *
 	 * @return string
 	 */
 	public function getApiErrorInfo() {
 		return $this->getApiError()->info;
 	}
 }
diff --git "a/include/class-mw\\API\\FailedSave.php" "b/include/class-mw\\API\\FailedSave.php"
new file mode 100644
index 0000000..bc0365e
--- /dev/null
+++ "b/include/class-mw\\API\\FailedSave.php"
@@ -0,0 +1,31 @@
+<?php
+# boz-mw - Another MediaWiki API handler in PHP
+# Copyright (C) 2019, 2020, 2021 Valerio Bozzolan
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+# MediaWiki API
+namespace mw\API;
+
+/**
+ * Specific API exception class for the 'failed-save' error code
+ *
+ * This error is throw when the wiki is unable to save,
+ * maybe because the database is under a weird condition.
+ */
+class FailedSaveException extends Exception {
+
+	const API_ERROR_CODE = 'failed-save';
+
+}