diff --git a/web/file_cache.h b/web/file_cache.h
index bf11c8c..7009e3c 100644
--- a/web/file_cache.h
+++ b/web/file_cache.h
@@ -11,7 +11,7 @@
 #include "core/object.h"
 
 
-class FileCache : Object {
+class FileCache : public Object {
     RCPP_OBJECT(FileCache, Object);
 
 public: