diff --git a/src/vehicle_gui.cpp b/src/vehicle_gui.cpp
index 40c0a78144..650ef8d9af 100644
--- a/src/vehicle_gui.cpp
+++ b/src/vehicle_gui.cpp
@@ -2596,6 +2596,8 @@ struct VehicleDetailsWindow : Window {
 	/** Checks whether service interval is enabled for the vehicle. */
 	static bool IsVehicleServiceIntervalEnabled(const VehicleType vehicle_type, CompanyID company_id)
 	{
+		if (_local_company != company_id) return false;
+
 		const VehicleDefaultSettings *vds = &Company::Get(company_id)->settings.vehicle;
 		switch (vehicle_type) {
 			default: NOT_REACHED();
@@ -2767,6 +2769,7 @@ struct VehicleDetailsWindow : Window {
 			v->ServiceIntervalIsPercent() ? STR_VEHICLE_DETAILS_PERCENT :
 			TimerGameEconomy::UsingWallclockUnits() ? STR_VEHICLE_DETAILS_MINUTES : STR_VEHICLE_DETAILS_DAYS;
 		this->GetWidget<NWidgetCore>(WID_VD_SERVICE_INTERVAL_DROPDOWN)->SetString(str);
+		this->SetWidgetDisabledState(WID_VD_SERVICE_INTERVAL_DROPDOWN, v->owner != _local_company);
 
 		this->DrawWidgets();
 	}