diff --git a/dom/ipc/FilePickerParent.h b/dom/ipc/FilePickerParent.h
index 7ab2f7dab1..89c472cb8a 100644
--- a/dom/ipc/FilePickerParent.h
+++ b/dom/ipc/FilePickerParent.h
@@ -27,8 +27,12 @@ class FilePickerParent : public PFilePickerParent
   , mMode(aMode)
   {}
 
+ private:
   virtual ~FilePickerParent();
 
+ public:
+  NS_INLINE_DECL_REFCOUNTING(FilePickerParent)
+
   void Done(int16_t aResult);
 
   struct BlobImplOrString