diff --git a/src/lime/ui/FileDialog.hx b/src/lime/ui/FileDialog.hx
index fee1ee5b5..f9d2284fa 100644
--- a/src/lime/ui/FileDialog.hx
+++ b/src/lime/ui/FileDialog.hx
@@ -223,6 +223,7 @@ class FileDialog
 
 		var path = defaultPath != null ? Path.withoutDirectory(defaultPath) : "download" + defaultExtension;
 		var buffer = (data : Bytes).getData();
+		buffer = buffer.slice(0, (data:Bytes).length);
 
 		#if commonjs
 		untyped #if haxe4 js.Syntax.code #else __js__ #end("require ('file-saver')")(new Blob([buffer], {type: type}), path, true);