diff --git a/src/app.rs b/src/app.rs
index 9679b37..5e3dff3 100644
--- a/src/app.rs
+++ b/src/app.rs
@@ -533,8 +533,11 @@ impl App {
     ) where
         F: FnOnce(Sender, Result<RawObject>, String) + Send + 'static,
     {
-        let object_detail_page = self.page_stack.current_page().as_object_detail();
-        let object_key = object_detail_page.current_object_key();
+        let object_key = match self.page_stack.current_page() {
+            page @ Page::ObjectDetail(_) => page.as_object_detail().current_object_key(),
+            page @ Page::ObjectPreview(_) => page.as_object_preview().current_object_key(),
+            page => panic!("Invalid page: {:?}", page),
+        };
 
         let bucket = object_key.bucket_name.clone();
         let key = object_key.joined_object_path(true);
diff --git a/src/pages/page.rs b/src/pages/page.rs
index faa73e7..3dbc3ac 100644
--- a/src/pages/page.rs
+++ b/src/pages/page.rs
@@ -113,6 +113,13 @@ impl Page {
         }
     }
 
+    pub fn as_object_preview(&self) -> &ObjectPreviewPage {
+        match self {
+            Self::ObjectPreview(page) => page,
+            page => panic!("Page is not ObjectPreview: {:?}", page),
+        }
+    }
+
     pub fn as_mut_object_preview(&mut self) -> &mut ObjectPreviewPage {
         match self {
             Self::ObjectPreview(page) => &mut *page,