diff --git a/apps/files_encryption/lib/util.php b/apps/files_encryption/lib/util.php
index 7228d2a6479..00b3192db8f 100644
--- a/apps/files_encryption/lib/util.php
+++ b/apps/files_encryption/lib/util.php
@@ -1193,7 +1193,7 @@ class Util {
 
 			return array(
 				$fileOwnerUid,
-				$filename
+				\OC_Filesystem::normalizePath($filename)
 			);
 		}