diff --git a/www/common/outer/login-block.js b/www/common/outer/login-block.js
index 4916ffa27..5938d4f72 100644
--- a/www/common/outer/login-block.js
+++ b/www/common/outer/login-block.js
@@ -107,7 +107,7 @@ define([
         // if we want to make CryptPad work in server subfolders, we'll need
         // to update this path derivation
         return (typeof(ApiConfig.httpUnsafeOrigin) !== 'undefined'?
-            ApiConfig.httpUnsafeOrigin: window.location.origin)
+            ApiConfig.httpUnsafeOrigin: window.location.origin + '/')
             + 'block/' + publicKey.slice(0, 2) + '/' +  publicKey;
     };