diff --git a/apps/files_external/lib/Lib/StorageConfig.php b/apps/files_external/lib/Lib/StorageConfig.php
index a3f0b11c7672e..afcb0c556fb95 100644
--- a/apps/files_external/lib/Lib/StorageConfig.php
+++ b/apps/files_external/lib/Lib/StorageConfig.php
@@ -38,6 +38,8 @@
 class StorageConfig implements \JsonSerializable {
 	public const MOUNT_TYPE_ADMIN = 1;
 	public const MOUNT_TYPE_PERSONAL = 2;
+	/** @deprecated use MOUNT_TYPE_PERSONAL (full uppercase) instead */
+	public const MOUNT_TYPE_PERSONAl = 2;
 
 	/**
 	 * Storage config id
diff --git a/apps/files_external/lib/Service/DBConfigService.php b/apps/files_external/lib/Service/DBConfigService.php
index 544fb121dff5c..ede0a1d7db7e9 100644
--- a/apps/files_external/lib/Service/DBConfigService.php
+++ b/apps/files_external/lib/Service/DBConfigService.php
@@ -38,6 +38,8 @@
 class DBConfigService {
 	public const MOUNT_TYPE_ADMIN = 1;
 	public const MOUNT_TYPE_PERSONAL = 2;
+	/** @deprecated use MOUNT_TYPE_PERSONAL (full uppercase) instead */
+	public const MOUNT_TYPE_PERSONAl = 2;
 
 	public const APPLICABLE_TYPE_GLOBAL = 1;
 	public const APPLICABLE_TYPE_GROUP = 2;