diff --git a/src/openrct2/scenario/Scenario.cpp b/src/openrct2/scenario/Scenario.cpp
index 3194095415..d1e4510d04 100644
--- a/src/openrct2/scenario/Scenario.cpp
+++ b/src/openrct2/scenario/Scenario.cpp
@@ -345,8 +345,6 @@ static void scenario_week_update()
                 break;
         }
     }
-    park_update_histories();
-    park_calculate_size();
 }
 
 static void scenario_fortnight_update()
diff --git a/src/openrct2/world/Park.cpp b/src/openrct2/world/Park.cpp
index cdeba36019..763f97d806 100644
--- a/src/openrct2/world/Park.cpp
+++ b/src/openrct2/world/Park.cpp
@@ -607,6 +607,15 @@ void Park::Update()
         auto intent = Intent(INTENT_ACTION_UPDATE_PARK_RATING);
         context_broadcast_intent(&intent);
     }
+
+    // Every week
+    if (date_is_week_start(gDateMonthTicks))
+    {
+        UpdateHistories();
+        gParkSize = CalculateParkSize();
+        window_invalidate_by_class(WC_PARK_INFORMATION);
+    }
+
     GenerateGuests();
 }
 
@@ -1098,11 +1107,6 @@ rct_peep * park_generate_new_guest()
     return _singleton->GenerateGuest();
 }
 
-void park_update_histories()
-{
-    _singleton->UpdateHistories();
-}
-
 void park_reset_history()
 {
     _singleton->ResetHistories();
diff --git a/src/openrct2/world/Park.h b/src/openrct2/world/Park.h
index d91151ed7b..0a553fff5a 100644
--- a/src/openrct2/world/Park.h
+++ b/src/openrct2/world/Park.h
@@ -139,7 +139,6 @@ money32 calculate_company_value();
 void reset_park_entry();
 rct_peep * park_generate_new_guest();
 
-void park_update_histories();
 void update_park_fences(sint32 x, sint32 y);
 void update_park_fences_around_tile(sint32 x, sint32 y);