diff --git a/src/browser/filestorage.js b/src/browser/filestorage.js
index 7ce76c80..e84f3be8 100644
--- a/src/browser/filestorage.js
+++ b/src/browser/filestorage.js
@@ -132,7 +132,7 @@ ServerFileStorageWrapper.prototype.load_from_server = function(sha256sum, file_s
  */
 ServerFileStorageWrapper.prototype.read = async function(sha256sum, offset, count, file_size)
 {
-    const data = await this.storage.read(sha256sum, offset, count);
+    const data = await this.storage.read(sha256sum, offset, count, file_size);
     if(!data)
     {
         const full_file = await this.load_from_server(sha256sum, file_size);
diff --git a/src/browser/starter.js b/src/browser/starter.js
index 103f2199..757e75a9 100644
--- a/src/browser/starter.js
+++ b/src/browser/starter.js
@@ -436,7 +436,7 @@ V86.prototype.continue_init = async function(emulator, options)
 
         if(base_url)
         {
-            file_storage = new ServerFileStorageWrapper(file_storage, base_url, this.zstd_decompress);
+            file_storage = new ServerFileStorageWrapper(file_storage, base_url, this.zstd_decompress.bind(this));
         }
         settings.fs9p = this.fs9p = new FS(file_storage);