diff --git a/src/newgrf_industries.cpp b/src/newgrf_industries.cpp
--- a/src/newgrf_industries.cpp
+++ b/src/newgrf_industries.cpp
@@ -19,6 +19,7 @@
 #include "error.h"
 #include "strings_func.h"
 #include "core/random_func.hpp"
+#include "timer/timer_game_calendar.h"
 
 #include "table/strings.h"
 
@@ -403,7 +404,7 @@ static uint32 GetCountAndDistanceOfClose
 		case 0xB0: return Clamp(this->industry->construction_date - DAYS_TILL_ORIGINAL_BASE_YEAR, 0, 65535); // Date when built since 1920 (in days)
 		case 0xB3: return this->industry->construction_type; // Construction type
 		case 0xB4: {
-			Date *latest = std::max_element(this->industry->last_cargo_accepted_at, endof(this->industry->last_cargo_accepted_at));
+			TimerGameCalendar::Date *latest = std::max_element(this->industry->last_cargo_accepted_at, endof(this->industry->last_cargo_accepted_at));
 			return Clamp((*latest) - DAYS_TILL_ORIGINAL_BASE_YEAR, 0, 65535); // Date last cargo accepted since 1920 (in days)
 		}
 	}