diff --git a/app/init.php b/app/init.php
index 0bcb8d38a8..40c2f569b9 100644
--- a/app/init.php
+++ b/app/init.php
@@ -69,7 +69,7 @@ const APP_LIMIT_USERS = 10000;
 const APP_LIMIT_ANTIVIRUS = 20000000; //20MB
 const APP_LIMIT_ENCRYPTION = 20000000; //20MB
 const APP_LIMIT_COMPRESSION = 20000000; //20MB
-const APP_LIMIT_PREVIEW = 10000000; //10MB file size limit for preview endpoint
+const APP_LIMIT_PREVIEW = 20000000; //20MB file size limit for preview endpoint
 const APP_CACHE_BUSTER = 302;
 const APP_VERSION_STABLE = '0.13.2';
 const APP_DATABASE_ATTRIBUTE_EMAIL = 'email';