diff --git a/src/company_func.h b/src/company_func.h
--- a/src/company_func.h
+++ b/src/company_func.h
@@ -23,6 +23,7 @@ void SetLocalCompany(CompanyID new_compa
 void ShowBuyCompanyDialog(CompanyID company);
 void CompanyAdminUpdate(const Company *company);
 void CompanyAdminBankrupt(CompanyID company_id);
+void UpdateLandscapingLimits();
 
 extern CompanyByte _local_company;
 extern CompanyByte _current_company;