diff --git a/src/newgrf_airport.cpp b/src/newgrf_airport.cpp
--- a/src/newgrf_airport.cpp
+++ b/src/newgrf_airport.cpp
@@ -58,6 +58,9 @@ struct AirportResolverObject : public Re
 	}
 
 	const SpriteGroup *ResolveReal(const RealSpriteGroup *group) const override;
+
+	GrfSpecFeature GetFeature() const override;
+	uint32 GetDebugID() const override;
 };
 
 /**
@@ -226,6 +229,16 @@ void AirportOverrideManager::SetEntitySp
 	return nullptr;
 }
 
+GrfSpecFeature AirportResolverObject::GetFeature() const
+{
+	return GSF_AIRPORTS;
+}
+
+uint32 AirportResolverObject::GetDebugID() const
+{
+	return AirportSpec::Get(this->airport_scope.airport_id)->grf_prop.local_id;
+}
+
 /* virtual */ uint32 AirportScopeResolver::GetRandomBits() const
 {
 	return this->st == nullptr ? 0 : this->st->random_bits;