diff --git a/src/linkgraph/linkgraphjob.cpp b/src/linkgraph/linkgraphjob.cpp
--- a/src/linkgraph/linkgraphjob.cpp
+++ b/src/linkgraph/linkgraphjob.cpp
@@ -37,7 +37,7 @@ LinkGraphJob::LinkGraphJob(const LinkGra
 		 * This is on purpose. */
 		link_graph(orig),
 		settings(_settings_game.linkgraph),
-		join_date(_date + (_settings_game.linkgraph.recalc_time / SECONDS_PER_DAY)),
+		join_date(TimerGameCalendar::date + (_settings_game.linkgraph.recalc_time / SECONDS_PER_DAY)),
 		job_completed(false),
 		job_aborted(false)
 {