diff --git a/src/openrct2-ui/windows/Guest.cpp b/src/openrct2-ui/windows/Guest.cpp
index cbe2bae1d5..1e51bd375e 100644
--- a/src/openrct2-ui/windows/Guest.cpp
+++ b/src/openrct2-ui/windows/Guest.cpp
@@ -1513,10 +1513,10 @@ void window_guest_stats_paint(rct_window* w, rct_drawpixelinfo* dpi)
 
     // Time in park
     y += LIST_ROW_HEIGHT + 1;
-    if (peep->time_in_park != -1)
+    if (peep->TimeInPark != -1)
     {
         int32_t eax = gScenarioTicks;
-        eax -= peep->time_in_park;
+        eax -= peep->TimeInPark;
         eax >>= 11;
         auto ft = Formatter::Common();
         ft.Add<uint16_t>(eax & 0xFFFF);
@@ -1579,7 +1579,7 @@ void window_guest_rides_update(rct_window* w)
     if (guest != nullptr)
     {
         // Every 2048 ticks do a full window_invalidate
-        int32_t number_of_ticks = gScenarioTicks - peep->time_in_park;
+        int32_t number_of_ticks = gScenarioTicks - peep->TimeInPark;
         if (!(number_of_ticks & 0x7FF))
             w->Invalidate();
 
diff --git a/src/openrct2-ui/windows/Staff.cpp b/src/openrct2-ui/windows/Staff.cpp
index f8e92d73ad..2affab5b9b 100644
--- a/src/openrct2-ui/windows/Staff.cpp
+++ b/src/openrct2-ui/windows/Staff.cpp
@@ -1104,7 +1104,7 @@ void window_staff_stats_paint(rct_window* w, rct_drawpixelinfo* dpi)
         y += LIST_ROW_HEIGHT;
     }
 
-    gfx_draw_string_left(dpi, STR_STAFF_STAT_EMPLOYED_FOR, static_cast<void*>(&peep->time_in_park), COLOUR_BLACK, x, y);
+    gfx_draw_string_left(dpi, STR_STAFF_STAT_EMPLOYED_FOR, static_cast<void*>(&peep->TimeInPark), COLOUR_BLACK, x, y);
     y += LIST_ROW_HEIGHT;
 
     switch (peep->staff_type)
diff --git a/src/openrct2/GameStateSnapshots.cpp b/src/openrct2/GameStateSnapshots.cpp
index 4731ae81a9..6cba345f77 100644
--- a/src/openrct2/GameStateSnapshots.cpp
+++ b/src/openrct2/GameStateSnapshots.cpp
@@ -272,7 +272,7 @@ struct GameStateSnapshots final : public IGameStateSnapshots
         COMPARE_FIELD(Peep, id);
         COMPARE_FIELD(Peep, cash_in_pocket);
         COMPARE_FIELD(Peep, cash_spent);
-        COMPARE_FIELD(Peep, time_in_park);
+        COMPARE_FIELD(Peep, TimeInPark);
         COMPARE_FIELD(Peep, RejoinQueueTimeout);
         COMPARE_FIELD(Peep, PreviousRide);
         COMPARE_FIELD(Peep, PreviousRideTimeOut);
diff --git a/src/openrct2/actions/StaffHireNewAction.hpp b/src/openrct2/actions/StaffHireNewAction.hpp
index b9b3aa9c45..d182b9d03e 100644
--- a/src/openrct2/actions/StaffHireNewAction.hpp
+++ b/src/openrct2/actions/StaffHireNewAction.hpp
@@ -231,7 +231,7 @@ private:
             }
 
             // Staff uses this
-            newPeep->time_in_park = gDateMonthsElapsed;
+            newPeep->TimeInPark = gDateMonthsElapsed;
             newPeep->PathfindGoal.x = 0xFF;
             newPeep->PathfindGoal.y = 0xFF;
             newPeep->PathfindGoal.z = 0xFF;
diff --git a/src/openrct2/peep/Guest.cpp b/src/openrct2/peep/Guest.cpp
index 6791f252ec..7193ad2114 100644
--- a/src/openrct2/peep/Guest.cpp
+++ b/src/openrct2/peep/Guest.cpp
@@ -805,7 +805,7 @@ void Guest::Tick128UpdateGuest(int32_t index)
         if (state == PEEP_STATE_WALKING && outside_of_park == 0 && !(PeepFlags & PEEP_FLAGS_LEAVING_PARK) && no_of_rides == 0
             && GuestHeadingToRideId == RIDE_ID_NULL)
         {
-            uint32_t time_duration = gScenarioTicks - time_in_park;
+            uint32_t time_duration = gScenarioTicks - TimeInPark;
             time_duration /= 2048;
 
             if (time_duration >= 5)
@@ -5679,7 +5679,7 @@ void Guest::UpdateEnteringPark()
     SetState(PEEP_STATE_FALLING);
 
     outside_of_park = 0;
-    time_in_park = gScenarioTicks;
+    TimeInPark = gScenarioTicks;
     increment_guests_in_park();
     decrement_guests_heading_for_park();
     auto intent = Intent(INTENT_ACTION_UPDATE_GUEST_COUNT);
diff --git a/src/openrct2/peep/Peep.cpp b/src/openrct2/peep/Peep.cpp
index 0756c52d16..bcca8c6723 100644
--- a/src/openrct2/peep/Peep.cpp
+++ b/src/openrct2/peep/Peep.cpp
@@ -1753,7 +1753,7 @@ Peep* Peep::Generate(const CoordsXYZ& coords)
 
     peep->cash_in_pocket = cash;
     peep->cash_spent = 0;
-    peep->time_in_park = -1;
+    peep->TimeInPark = -1;
     peep->PathfindGoal.x = 0xFF;
     peep->PathfindGoal.y = 0xFF;
     peep->PathfindGoal.z = 0xFF;
diff --git a/src/openrct2/peep/Peep.h b/src/openrct2/peep/Peep.h
index 9acaf9c79e..4d9577845e 100644
--- a/src/openrct2/peep/Peep.h
+++ b/src/openrct2/peep/Peep.h
@@ -680,7 +680,7 @@ struct Peep : SpriteBase
     uint32_t id;
     money32 cash_in_pocket;
     money32 cash_spent;
-    int32_t time_in_park;
+    int32_t TimeInPark;
     int8_t RejoinQueueTimeout; // whilst waiting for a free vehicle (or pair) in the entrance
     uint8_t PreviousRide;
     uint16_t PreviousRideTimeOut;
diff --git a/src/openrct2/peep/Staff.cpp b/src/openrct2/peep/Staff.cpp
index af154689bf..4539081333 100644
--- a/src/openrct2/peep/Staff.cpp
+++ b/src/openrct2/peep/Staff.cpp
@@ -366,7 +366,7 @@ void staff_reset_stats()
 
     FOR_ALL_STAFF (spriteIndex, peep)
     {
-        peep->time_in_park = gDateMonthsElapsed;
+        peep->TimeInPark = gDateMonthsElapsed;
         peep->StaffLawnsMown = 0;
         peep->StaffRidesFixed = 0;
         peep->StaffGardensWatered = 0;
diff --git a/src/openrct2/rct1/S4Importer.cpp b/src/openrct2/rct1/S4Importer.cpp
index f3c04a2d2c..aa3783aea3 100644
--- a/src/openrct2/rct1/S4Importer.cpp
+++ b/src/openrct2/rct1/S4Importer.cpp
@@ -1479,7 +1479,7 @@ private:
         dst->id = src->id;
         dst->cash_in_pocket = src->cash_in_pocket;
         dst->cash_spent = src->cash_spent;
-        dst->time_in_park = src->time_in_park;
+        dst->TimeInPark = src->time_in_park;
 
         // This doubles as staff type
         dst->no_of_rides = src->no_of_rides;
diff --git a/src/openrct2/rct2/S6Exporter.cpp b/src/openrct2/rct2/S6Exporter.cpp
index d4ccf26890..6e4cc75d51 100644
--- a/src/openrct2/rct2/S6Exporter.cpp
+++ b/src/openrct2/rct2/S6Exporter.cpp
@@ -1194,7 +1194,7 @@ void S6Exporter::ExportSpritePeep(RCT2SpritePeep* dst, const Peep* src)
     dst->id = src->id;
     dst->cash_in_pocket = src->cash_in_pocket;
     dst->cash_spent = src->cash_spent;
-    dst->time_in_park = src->time_in_park;
+    dst->time_in_park = src->TimeInPark;
     dst->rejoin_queue_timeout = src->RejoinQueueTimeout;
     dst->previous_ride = src->PreviousRide;
     dst->previous_ride_time_out = src->PreviousRideTimeOut;
diff --git a/src/openrct2/rct2/S6Importer.cpp b/src/openrct2/rct2/S6Importer.cpp
index b9fc8278c1..f80b34a5bb 100644
--- a/src/openrct2/rct2/S6Importer.cpp
+++ b/src/openrct2/rct2/S6Importer.cpp
@@ -1459,7 +1459,7 @@ public:
         dst->id = src->id;
         dst->cash_in_pocket = src->cash_in_pocket;
         dst->cash_spent = src->cash_spent;
-        dst->time_in_park = src->time_in_park;
+        dst->TimeInPark = src->time_in_park;
         dst->RejoinQueueTimeout = src->rejoin_queue_timeout;
         dst->PreviousRide = src->previous_ride;
         dst->PreviousRideTimeOut = src->previous_ride_time_out;
diff --git a/test/tests/S6ImportExportTests.cpp b/test/tests/S6ImportExportTests.cpp
index d9d12f6a5e..45bd96dcec 100644
--- a/test/tests/S6ImportExportTests.cpp
+++ b/test/tests/S6ImportExportTests.cpp
@@ -216,7 +216,7 @@ static void CompareSpriteDataPeep(const Peep& left, const Peep& right)
     COMPARE_FIELD(id);
     COMPARE_FIELD(cash_in_pocket);
     COMPARE_FIELD(cash_spent);
-    COMPARE_FIELD(time_in_park);
+    COMPARE_FIELD(TimeInPark);
     COMPARE_FIELD(RejoinQueueTimeout);
     COMPARE_FIELD(PreviousRide);
     COMPARE_FIELD(PreviousRideTimeOut);