diff --git a/src/settings.cpp b/src/settings.cpp
--- a/src/settings.cpp
+++ b/src/settings.cpp
@@ -1283,8 +1283,8 @@ void LoadFromConfig(bool startup)
 	/* Load basic settings only during bootstrap, load other settings not during bootstrap */
 	if (!startup) {
 		if (generic_version < IFV_LINKGRAPH_SECONDS) {
-			_settings_newgame.linkgraph.recalc_interval *= SECONDS_PER_DAY;
-			_settings_newgame.linkgraph.recalc_time     *= SECONDS_PER_DAY;
+			_settings_newgame.linkgraph.recalc_interval *= CalendarTime::SECONDS_PER_DAY;
+			_settings_newgame.linkgraph.recalc_time     *= CalendarTime::SECONDS_PER_DAY;
 		}
 
 		/* Move no_http_content_downloads and use_relay_service from generic_ini to private_ini. */