diff --git a/core/Command/Encryption/EncryptAll.php b/core/Command/Encryption/EncryptAll.php
index 17d3a80394262..cf4ee749791a9 100644
--- a/core/Command/Encryption/EncryptAll.php
+++ b/core/Command/Encryption/EncryptAll.php
@@ -37,7 +37,7 @@
 
 class EncryptAll extends Command {
 	protected bool $wasTrashbinEnabled = false;
-	protected bool $wasMaintenanceModeEnabled;
+	protected bool $wasMaintenanceModeEnabled = false;
 
 	public function __construct(
 		protected IManager $encryptionManager,