diff --git a/src/ui.rs b/src/ui.rs
index baba565..4ac6bfc 100644
--- a/src/ui.rs
+++ b/src/ui.rs
@@ -422,7 +422,9 @@ fn choose_file(ui: Rc<RefCell<Ui>>, window: &ApplicationWindow) {
         if response == ResponseType::Accept {
             let path = d.file().unwrap().path().unwrap();
 
-            ui.borrow().document_canvas.as_ref().unwrap().purge_cache();
+            if ui.borrow().document_canvas.is_some() {
+                ui.borrow().document_canvas.as_ref().unwrap().purge_cache();
+            }
 
             load_document(path, Rc::clone(&ui), 0);
         }