diff --git a/apps/desktop-tauri/src-tauri/src/taskbar_widget.rs b/apps/desktop-tauri/src-tauri/src/taskbar_widget.rs
index 02dad2b1..c34aab55 100644
--- a/apps/desktop-tauri/src-tauri/src/taskbar_widget.rs
+++ b/apps/desktop-tauri/src-tauri/src/taskbar_widget.rs
@@ -223,7 +223,7 @@ fn constraining_readout(
             out.push((Some("Model"), window));
         }
         if let Some(window) = snapshot.tertiary.as_ref() {
-            out.push((Some("Extra"), window));
+            out.push((snapshot.tertiary_label.as_deref().or(Some("Extra")), window));
         }
         for extra in &snapshot.extra_rate_windows {
             if extra.id == "reset-credits" {
@@ -2189,6 +2189,32 @@ mod tests {
         assert_eq!(readout.window.used_percent, 92.0);
     }
 
+    #[test]
+    fn constraining_readout_uses_tertiary_label_when_it_binds() {
+        // OpenCode Go monthly bar: the tertiary window's own label must show on
+        // the taskbar, not the generic "Extra".
+        let mut snapshot = snap("opencodego", None, 10.0);
+        snapshot.primary_label = Some("Rolling".into());
+        snapshot.tertiary = Some(rate_window(100.0, Some(43_200)));
+        snapshot.tertiary_label = Some("Monthly".into());
+
+        let readout = constraining_readout(&snapshot);
+        assert_eq!(readout.label, Some("Monthly"));
+        assert_eq!(readout.window.used_percent, 100.0);
+    }
+
+    #[test]
+    fn constraining_readout_falls_back_to_extra_for_unnamed_tertiary() {
+        let mut snapshot = snap("opencodego", None, 10.0);
+        snapshot.primary_label = Some("Rolling".into());
+        snapshot.tertiary = Some(rate_window(100.0, Some(43_200)));
+        snapshot.tertiary_label = None;
+
+        let readout = constraining_readout(&snapshot);
+        assert_eq!(readout.label, Some("Extra"));
+        assert_eq!(readout.window.used_percent, 100.0);
+    }
+
     #[test]
     fn cursor_strip_prefers_auto_when_api_is_maxed() {
         // Parallel pools: maxed API must not hide Auto that still has room.