diff --git a/src/browser/main/tab/mod.rs b/src/browser/main/tab/mod.rs
index f6fda584..32a5d555 100644
--- a/src/browser/main/tab/mod.rs
+++ b/src/browser/main/tab/mod.rs
@@ -13,6 +13,7 @@ use gtk::{
 use std::{cell::RefCell, collections::HashMap, sync::Arc};
 
 pub struct Tab {
+    // GTK
     widget: Arc<Notebook>,
     // Dynamically allocated reference index
     labels: RefCell<HashMap<GString, Arc<Label>>>,