diff --git a/src/company_gui.cpp b/src/company_gui.cpp
index 7324d4fa8f..c2dfcd4ae8 100644
--- a/src/company_gui.cpp
+++ b/src/company_gui.cpp
@@ -2402,6 +2402,7 @@ struct CompanyWindow : Window
 
 			case WID_C_DESC_INAUGURATION:
                 SetDParam(0, Company::Get((CompanyID) this->window_number)->inaugurated_year_calendar);
+                SetDParam(1, Company::Get((CompanyID) this->window_number)->inaugurated_year);
                 break;
 
 			case WID_C_DESC_COMPANY_VALUE: