diff --git a/src/finance.c b/src/finance.c
index 86eb3d1508..7db4b107b0 100644
--- a/src/finance.c
+++ b/src/finance.c
@@ -23,6 +23,7 @@
 #include "sprite.h"
 #include "park.h"
 #include "peep.h"
+#include "ride.h"
 #include "window.h"
 
 // monthly cost
@@ -102,6 +103,35 @@ void finance_pay_interest()
 	finance_payment((sint32)tempcost, RCT_EXPENDITURE_TYPE_INTEREST);
 }
 
+/**
+ *
+ * rct2: 0x006AC885
+ */
+void finance_pay_ride_upkeep()
+{
+	rct_ride* ride;
+	for (int i = 0; i < MAX_RIDES; i++) {
+		ride = &(RCT2_ADDRESS(RCT2_ADDRESS_RIDE_LIST, rct_ride)[i]);
+		if (ride->type == RIDE_TYPE_NULL)
+			continue;
+
+		if (!(ride->var_1D0 & 0x1000)) {
+			ride->build_date = RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_MONTH_YEAR, uint16);
+			ride->var_196 = 25855; // durability?
+
+		}
+		if (ride->status != RIDE_STATUS_CLOSED && !(RCT2_GLOBAL(RCT2_ADDRESS_PARK_FLAGS, uint32) & 0x800)) {
+			sint16 upkeep = ride->upkeep_cost;
+			if (upkeep != -1) {
+				ride->var_158 -= upkeep;
+				ride->var_14D |= 2;
+				finance_payment(upkeep, RCT2_EXPENDITURE_TYPE_RIDE_UPKEEP);
+			}
+		}
+	}
+}
+
+
 /**
 *
 *  rct2: 0x0069DEFB
diff --git a/src/finance.h b/src/finance.h
index 3fc80726fb..7bb126cc01 100644
--- a/src/finance.h
+++ b/src/finance.h
@@ -28,6 +28,7 @@
 typedef int rct_expenditure_type;
 
 enum {
+	RCT2_EXPENDITURE_TYPE_RIDE_UPKEEP = 1,
 	RCT_EXPENDITURE_TYPE_WAGES = 10,
 	RCT_EXPENDITURE_TYPE_RESEARCH = 12,
 	RCT_EXPENDITURE_TYPE_INTEREST = 13
@@ -38,6 +39,7 @@ void finance_payment(int amount, rct_expenditure_type type);
 void finance_pay_wages();
 void finance_pay_research();
 void finance_pay_interest();
+void finance_pay_ride_upkeep();
 void finance_init();
 
 #endif
\ No newline at end of file
diff --git a/src/ride.c b/src/ride.c
index bb4d8e7164..42f32287ff 100644
--- a/src/ride.c
+++ b/src/ride.c
@@ -20,6 +20,9 @@
 
 #include "addresses.h"
 #include "ride.h"
+#include "sprite.h"
+#include "peep.h"
+#include "window.h"
 
 #define GET_RIDE(x) (&(RCT2_ADDRESS(RCT2_ADDRESS_RIDE_LIST, rct_ride)[x]))
 #define GET_RIDE_MEASUREMENT(x) (&(RCT2_ADDRESS(RCT2_ADDRESS_RIDE_MEASUREMENTS, rct_ride_measurement)[x]))
@@ -166,4 +169,34 @@ void reset_all_ride_build_dates() {
 			ride->build_date -= RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_MONTH_YEAR, uint16);
 		}
 	}
-}
\ No newline at end of file
+}
+
+/**
+  * rct2: 0x006AC916
+  */
+void ride_update_favourited_stat()
+{
+	rct_ride *ride;
+	rct_peep* peep;
+
+	for (int i = 0; i < MAX_RIDES; i++) {
+		ride = GET_RIDE(i);
+		if (ride->type != RIDE_TYPE_NULL)
+			ride->guests_favourite = 0;
+
+	}
+	for (int sprite_idx = RCT2_GLOBAL(RCT2_ADDRESS_SPRITES_START_PEEP, uint16); sprite_idx != SPRITE_INDEX_NULL; sprite_idx = peep->next) {
+		peep = &(RCT2_ADDRESS(RCT2_ADDRESS_SPRITE_LIST, rct_sprite)[sprite_idx].peep);
+		if (peep->var_08 != 4)
+			return;
+		if (peep->favourite_ride != 0xff) {
+			ride = GET_RIDE(peep->favourite_ride);
+			ride->guests_favourite++;
+			ride->var_14D |= 1;
+
+		}
+
+	}
+	window_invalidate_by_id(WC_RIDE_LIST, 0);
+}
+
diff --git a/src/ride.h b/src/ride.h
index f7152bf3e5..84eb778120 100644
--- a/src/ride.h
+++ b/src/ride.h
@@ -74,7 +74,8 @@ typedef struct {
 	uint16 var_158;
 	uint8 pad_15A[0x26];
 	uint16 build_date;				
-	uint8 pad_182[0x14];
+	sint16 upkeep_cost;				// 0x182
+	uint8 pad_184[0x12];
 	uint16 var_196;
 	uint8 pad_198;
 	uint8 var_199;
@@ -260,5 +261,6 @@ int ride_get_total_queue_length(rct_ride *ride);
 int ride_get_max_queue_time(rct_ride *ride);
 void ride_init_all();
 void reset_all_ride_build_dates();
+void ride_update_favourited_stat();
 
 #endif
diff --git a/src/scenario.c b/src/scenario.c
index 954f2d489c..81f97bbd08 100644
--- a/src/scenario.c
+++ b/src/scenario.c
@@ -604,7 +604,7 @@ void scenario_objective5_check()
 
 	memset(type_already_counted, 0, 256);
 
-	for (int i = 0; i < 255; i++) {
+	for (int i = 0; i < MAX_RIDES; i++) {
 		uint8 subtype_id;
 		uint32 subtype_p;
 		ride = &(RCT2_ADDRESS(RCT2_ADDRESS_RIDE_LIST, rct_ride)[i]);
@@ -640,7 +640,7 @@ void scenario_objective8_check()
 
 	memset(type_already_counted, 0, 256);
 
-	for (int i = 0; i < 255; i++) {
+	for (int i = 0; i < MAX_RIDES; i++) {
 		uint8 subtype_id;
 		uint32 subtype_p;
 		ride = &(RCT2_ADDRESS(RCT2_ADDRESS_RIDE_LIST, rct_ride)[i]);
@@ -741,7 +741,7 @@ void scenario_objectives_check()
 	{
 		rct_ride* ride;
 		int rcs = 0;
-		for (int i = 0; i < 255; i++) {
+		for (int i = 0; i < MAX_RIDES; i++) {
 			ride = &(RCT2_ADDRESS(RCT2_ADDRESS_RIDE_LIST, rct_ride)[i]);
 			if (ride->status && ride->excitement > objective_currency)
 				rcs++;
@@ -875,7 +875,7 @@ void scenario_update()
 		scenario_marketing_update();
 		peep_problem_warnings_update();
 		RCT2_CALLPROC_EBPSAFE(0x006B7A5E); // check ride reachability
-		RCT2_CALLPROC_EBPSAFE(0x006AC916); // ride update favourited
+		ride_update_favourited_stat();
 
 		if (month <= 1 && RCT2_GLOBAL(0x009ADAE0, sint32) != -1 && RCT2_GLOBAL(0x009ADAE0 + 14, uint16) & 1) {
 			for (int i = 0; i < 100; ++i) {
@@ -893,8 +893,8 @@ void scenario_update()
 
 	//if ( (unsigned int)((2 * current_day) & 0xFFFF) >= 0xFFF8) {
 	if (next_month_tick % 0x8000 == 0) {
-		// biweekly checks
-		RCT2_CALLPROC_EBPSAFE(0x006AC885);
+		// fortnightly 
+		finance_pay_ride_upkeep();
 	}
 
 	RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_MONTH_TICKS, uint16) = next_month_tick;