diff --git a/examples/companion_radio/ui-lvgl/LvglPort.h b/examples/companion_radio/ui-lvgl/LvglPort.h
index 81fd72c7..aeb7767f 100644
--- a/examples/companion_radio/ui-lvgl/LvglPort.h
+++ b/examples/companion_radio/ui-lvgl/LvglPort.h
@@ -878,8 +878,13 @@ static void setLiveTiles(bool on) { nvs::putBool("mc_wifi", "live", on); }
 // Map tools > Hiking trails: the Waymarked Trails overlay over the map.
 static bool trailsOn() { return nvs::getBool("mc_ui", "trails", false); }
 static void setTrailsOn(bool on) { nvs::putBool("mc_ui", "trails", on); }
-// Map tools > Vector map (test).
+// Map tools > Vector map (test). Unfinished: on only in a -D MAP_VECTOR build,
+// off (and its switch gone) otherwise, whatever was saved.
+#ifdef MAP_VECTOR
 static bool vectorOn() { return nvs::getBool("mc_ui", "vector", false); }
+#else
+static bool vectorOn() { return false; }
+#endif
 static void setVectorOn(bool on) { nvs::putBool("mc_ui", "vector", on); }
 
 // Screen-lock PIN (Settings > Display > Screen PIN): digits, "" = none.
diff --git a/examples/companion_radio/ui-lvgl/NavMap.h b/examples/companion_radio/ui-lvgl/NavMap.h
index f4449855..1e60bc27 100644
--- a/examples/companion_radio/ui-lvgl/NavMap.h
+++ b/examples/companion_radio/ui-lvgl/NavMap.h
@@ -1028,6 +1028,7 @@ void UITask::navToolsPopup() {
   lv_obj_t* tsw = switchRow(g, "Hiking trails", "Marked routes in their colours", nullptr);
   if (lvport::trailsOn()) lv_obj_add_state(tsw, LV_STATE_CHECKED);
   lv_obj_add_event_cb(tsw, onTrails, LV_EVENT_VALUE_CHANGED, NULL);
+#ifdef MAP_VECTOR   // unfinished (LvglPort.h vectorOn)
   lv_obj_t* vsw = switchRow(g, "Vector map (test)", "Drawn on the device: trails, contours", nullptr);
   if (lvport::vectorOn()) lv_obj_add_state(vsw, LV_STATE_CHECKED);
   lv_obj_add_event_cb(vsw, onVectorMap, LV_EVENT_VALUE_CHANGED, NULL);
@@ -1035,6 +1036,7 @@ void UITask::navToolsPopup() {
   int nv = mapview::s_vpacks.count();
   snprintf(vr, sizeof(vr), nv ? "%d on the card" : "None - packs go in /vmap", nv);
   listRow(g, "Vector regions", vr, onNavTool, (void*)(uintptr_t)navmap::TL_REGIONS);
+#endif
 
   refreshNavTools();
 }