diff --git a/src/company_func.h b/src/company_func.h
--- a/src/company_func.h
+++ b/src/company_func.h
@@ -24,6 +24,7 @@ void ShowBuyCompanyDialog(CompanyID comp
 void CompanyAdminUpdate(const Company *company);
 void CompanyAdminBankrupt(CompanyID company_id);
 void UpdateLandscapingLimits();
+void UpdateCompanyLiveries(Company *c);
 
 bool CheckCompanyHasMoney(CommandCost &cost);
 void SubtractMoneyFromCompany(const CommandCost& cost);