Index: vendor/composer/autoload_classmap.php
--- vendor/composer/autoload_classmap.php.orig
+++ vendor/composer/autoload_classmap.php
@@ -8,8 +8,8 @@ $baseDir = dirname($vendorDir);
 return [
 	'ASDevice' => $baseDir . '/lib/core/asdevice.php',
 	'AuthenticationRequiredException' => $baseDir . '/lib/exceptions/authenticationrequiredexception.php',
-	'BaseException' => '/usr/share/php-mapi/class.baseexception.php',
-	'BaseRecurrence' => '/usr/share/php-mapi/class.baserecurrence.php',
+	'BaseException' => UMAPI_PATH . '/class.baseexception.php',
+	'BaseRecurrence' => UMAPI_PATH . '/class.baserecurrence.php',
 	'BodyPartPreference' => $baseDir . '/lib/core/bodypartpreference.php',
 	'BodyPreference' => $baseDir . '/lib/core/bodypreference.php',
 	'ChangesMemoryWrapper' => $baseDir . '/lib/core/changesmemorywrapper.php',
@@ -25,7 +25,7 @@ return [
 	'Find' => $baseDir . '/lib/request/find.php',
 	'FolderChange' => $baseDir . '/lib/request/folderchange.php',
 	'FolderSync' => $baseDir . '/lib/request/foldersync.php',
-	'FreeBusy' => '/usr/share/php-mapi/class.freebusy.php',
+	'FreeBusy' => UMAPI_PATH . '/class.freebusy.php',
 	'GSync' => $baseDir . '/lib/core/gsync.php',
 	'GSyncException' => $baseDir . '/lib/exceptions/gsyncexception.php',
 	'GetAttachment' => $baseDir . '/lib/request/getattachment.php',
@@ -47,14 +47,14 @@ return [
 	'ItemOperations' => $baseDir . '/lib/request/itemoperations.php',
 	'Log' => $baseDir . '/lib/log/log.php',
 	'LoopDetection' => $baseDir . '/lib/core/loopdetection.php',
-	'MAPIException' => '/usr/share/php-mapi/class.mapiexception.php',
+	'MAPIException' => UMAPI_PATH . '/class.mapiexception.php',
 	'MAPIMapping' => $baseDir . '/lib/grommunio/mapimapping.php',
 	'MAPIProvider' => $baseDir . '/lib/grommunio/mapiprovider.php',
 	'MAPIStreamWrapper' => $baseDir . '/lib/grommunio/mapistreamwrapper.php',
 	'MAPIUtils' => $baseDir . '/lib/grommunio/mapiutils.php',
     'Mail_RFC822' => $baseDir . '/lib/utils/g_RFC822.php',
 	'MeetingResponse' => $baseDir . '/lib/request/meetingresponse.php',
-	'Meetingrequest' => '/usr/share/php-mapi/class.meetingrequest.php',
+	'Meetingrequest' => UMAPI_PATH . '/class.meetingrequest.php',
 	'MoveItems' => $baseDir . '/lib/request/moveitems.php',
 	'NoHierarchyCacheAvailableException' => $baseDir . '/lib/exceptions/nohierarchycacheavailableexception.php',
 	'NoPostRequestException' => $baseDir . '/lib/exceptions/nopostrequestexception.php',
@@ -66,7 +66,7 @@ return [
 	'Provisioning' => $baseDir . '/lib/request/provisioning.php',
 	'ProvisioningManager' => $baseDir . '/lib/core/provisioningmanager.php',
 	'ProvisioningRequiredException' => $baseDir . '/lib/exceptions/provisioningrequiredexception.php',
-	'Recurrence' => '/usr/share/php-mapi/class.recurrence.php',
+	'Recurrence' => UMAPI_PATH . '/class.recurrence.php',
 	'RedisConnection' => $baseDir . '/lib/core/redisconnection.php',
 	'ReplaceNullcharFilter' => $baseDir . '/lib/wbxml/replacenullcharfilter.php',
 	'Request' => $baseDir . '/lib/request/request.php',
@@ -141,8 +141,8 @@ return [
 	'SyncUserInformation' => $baseDir . '/lib/syncobjects/syncuserinformation.php',
 	'SyncValidateCert' => $baseDir . '/lib/syncobjects/syncvalidatecert.php',
 	'Syslog' => $baseDir . '/lib/log/syslog.php',
-	'TaskRecurrence' => '/usr/share/php-mapi/class.taskrecurrence.php',
-	'TaskRequest' => '/usr/share/php-mapi/class.taskrequest.php',
+	'TaskRecurrence' => UMAPI_PATH . '/class.taskrecurrence.php',
+	'TaskRequest' => UMAPI_PATH . '/class.taskrequest.php',
 	'TimezoneUtil' => $baseDir . '/lib/utils/timezoneutil.php',
 	'TopCollector' => $baseDir . '/lib/core/topcollector.php',
 	'UnavailableException' => $baseDir . '/lib/exceptions/unavailableexception.php',
