diff --git a/lib/private/Files/Storage/Wrapper/Encryption.php b/lib/private/Files/Storage/Wrapper/Encryption.php
index d3f514375ea..64c9b0a4a66 100644
--- a/lib/private/Files/Storage/Wrapper/Encryption.php
+++ b/lib/private/Files/Storage/Wrapper/Encryption.php
@@ -937,7 +937,7 @@ class Encryption extends Wrapper {
 
 			// if the header doesn't contain a encryption module we check if it is a
 			// legacy file. If true, we add the default encryption module
-			if (!isset($result[Util::HEADER_ENCRYPTION_MODULE_KEY] && (!empty($result) || $exists)) {
+			if (!isset($result[Util::HEADER_ENCRYPTION_MODULE_KEY]) && (!empty($result) || $exists)) {
 				$result[Util::HEADER_ENCRYPTION_MODULE_KEY] = 'OC_DEFAULT_MODULE';
 			}
 		}