diff --git a/apps/encryption/lib/Crypto/Crypt.php b/apps/encryption/lib/Crypto/Crypt.php
index f80daec728a4d..0aadd64eaec1d 100644
--- a/apps/encryption/lib/Crypto/Crypt.php
+++ b/apps/encryption/lib/Crypto/Crypt.php
@@ -545,7 +545,7 @@ private function decrypt(string $encryptedContent, string $iv, string $passPhras
 			$options,
 			$iv);
 
-		if ($plainContent) {
+		if ($plainContent !== false) {
 			return $plainContent;
 		} else {
 			throw new DecryptionFailedException('Encryption library: Decryption (symmetric) of content failed: ' . openssl_error_string());