diff --git a/contributors.md b/contributors.md
index b2d321f372..26b7168cda 100644
--- a/contributors.md
+++ b/contributors.md
@@ -211,6 +211,7 @@ The following people are not part of the development team, but have been contrib
 * Nehemiah Negussie (nehemiah-negussie)
 * (zzril)
 * Ernest Elgin (eaeiv)
+* Ernest Wong (ErnWong)
 
 
 ## Toolchain
diff --git a/src/openrct2/management/Finance.cpp b/src/openrct2/management/Finance.cpp
index 025340238a..2d5d872510 100644
--- a/src/openrct2/management/Finance.cpp
+++ b/src/openrct2/management/Finance.cpp
@@ -173,7 +173,7 @@ void FinancePayRideUpkeep()
         if (ride.status != RideStatus::Closed && !(gParkFlags & PARK_FLAGS_NO_MONEY))
         {
             auto upkeep = ride.upkeep_cost;
-            if (upkeep != -1)
+            if (upkeep != MONEY64_UNDEFINED)
             {
                 ride.total_profit -= upkeep;
                 ride.window_invalidate_flags |= RIDE_INVALIDATE_RIDE_INCOME;