diff --git a/src/openrct2/GameStateSnapshots.cpp b/src/openrct2/GameStateSnapshots.cpp
index a5ee7ef0bd..be2be73864 100644
--- a/src/openrct2/GameStateSnapshots.cpp
+++ b/src/openrct2/GameStateSnapshots.cpp
@@ -255,7 +255,7 @@ struct GameStateSnapshots final : public IGameStateSnapshots
         COMPARE_FIELD(Peep, current_train);
         COMPARE_FIELD(Peep, time_to_sitdown);
         COMPARE_FIELD(Peep, special_sprite);
-        COMPARE_FIELD(Peep, action_sprite_type);
+        COMPARE_FIELD(Peep, ActionSpriteType);
         COMPARE_FIELD(Peep, NextActionSpriteType);
         COMPARE_FIELD(Peep, ActionSpriteImageOffset);
         COMPARE_FIELD(Peep, Action);
diff --git a/src/openrct2/actions/StaffHireNewAction.hpp b/src/openrct2/actions/StaffHireNewAction.hpp
index 96972ae055..ef795815b5 100644
--- a/src/openrct2/actions/StaffHireNewAction.hpp
+++ b/src/openrct2/actions/StaffHireNewAction.hpp
@@ -164,7 +164,7 @@ private:
             newPeep->special_sprite = 0;
             newPeep->ActionSpriteImageOffset = 0;
             newPeep->WalkingFrameNum = 0;
-            newPeep->action_sprite_type = PEEP_ACTION_SPRITE_TYPE_NONE;
+            newPeep->ActionSpriteType = PEEP_ACTION_SPRITE_TYPE_NONE;
             newPeep->PathCheckOptimisation = 0;
             newPeep->type = PEEP_TYPE_STAFF;
             newPeep->outside_of_park = 0;
diff --git a/src/openrct2/paint/sprite/Paint.Peep.cpp b/src/openrct2/paint/sprite/Paint.Peep.cpp
index ebc6cea1e7..c5d32343f6 100644
--- a/src/openrct2/paint/sprite/Paint.Peep.cpp
+++ b/src/openrct2/paint/sprite/Paint.Peep.cpp
@@ -69,7 +69,7 @@ void peep_paint(paint_session* session, const Peep* peep, int32_t imageDirection
 
     rct_peep_animation_entry sprite = g_peep_animation_entries[peep->sprite_type];
 
-    PeepActionSpriteType spriteType = peep->action_sprite_type;
+    PeepActionSpriteType spriteType = peep->ActionSpriteType;
     uint8_t imageOffset = peep->ActionSpriteImageOffset;
 
     if (peep->Action == PEEP_ACTION_NONE_1)
diff --git a/src/openrct2/peep/Guest.cpp b/src/openrct2/peep/Guest.cpp
index f57a913cdf..c47ff4b8e5 100644
--- a/src/openrct2/peep/Guest.cpp
+++ b/src/openrct2/peep/Guest.cpp
@@ -6776,7 +6776,7 @@ void Guest::SetSpriteType(PeepSpriteType new_sprite_type)
         PeepFlags |= PEEP_FLAGS_SLOW_WALK;
     }
 
-    action_sprite_type = PEEP_ACTION_SPRITE_TYPE_INVALID;
+    ActionSpriteType = PEEP_ACTION_SPRITE_TYPE_INVALID;
     UpdateCurrentActionSpriteType();
 
     if (state == PEEP_STATE_SITTING)
diff --git a/src/openrct2/peep/Peep.cpp b/src/openrct2/peep/Peep.cpp
index da0a7ccb65..6e1026c93a 100644
--- a/src/openrct2/peep/Peep.cpp
+++ b/src/openrct2/peep/Peep.cpp
@@ -525,18 +525,18 @@ void Peep::UpdateCurrentActionSpriteType()
         return;
     }
     PeepActionSpriteType newActionSpriteType = GetActionSpriteType();
-    if (action_sprite_type == newActionSpriteType)
+    if (ActionSpriteType == newActionSpriteType)
     {
         return;
     }
 
     Invalidate();
-    action_sprite_type = newActionSpriteType;
+    ActionSpriteType = newActionSpriteType;
 
     const rct_sprite_bounds* spriteBounds = g_peep_animation_entries[sprite_type].sprite_bounds;
-    sprite_width = spriteBounds[action_sprite_type].sprite_width;
-    sprite_height_negative = spriteBounds[action_sprite_type].sprite_height_negative;
-    sprite_height_positive = spriteBounds[action_sprite_type].sprite_height_positive;
+    sprite_width = spriteBounds[ActionSpriteType].sprite_width;
+    sprite_height_negative = spriteBounds[ActionSpriteType].sprite_height_negative;
+    sprite_height_positive = spriteBounds[ActionSpriteType].sprite_height_positive;
 
     Invalidate();
 }
@@ -623,8 +623,8 @@ std::optional<CoordsXY> Peep::UpdateAction(int16_t& xy_distance)
         loc += word_981D7C[nextDirection / 8];
         WalkingFrameNum++;
         const rct_peep_animation* peepAnimation = g_peep_animation_entries[sprite_type].sprite_animation;
-        const uint8_t* imageOffset = peepAnimation[action_sprite_type].frame_offsets;
-        if (WalkingFrameNum >= peepAnimation[action_sprite_type].num_frames)
+        const uint8_t* imageOffset = peepAnimation[ActionSpriteType].frame_offsets;
+        if (WalkingFrameNum >= peepAnimation[ActionSpriteType].num_frames)
         {
             WalkingFrameNum = 0;
         }
@@ -636,14 +636,14 @@ std::optional<CoordsXY> Peep::UpdateAction(int16_t& xy_distance)
     ActionFrame++;
 
     // If last frame of action
-    if (ActionFrame >= peepAnimation[action_sprite_type].num_frames)
+    if (ActionFrame >= peepAnimation[ActionSpriteType].num_frames)
     {
         ActionSpriteImageOffset = 0;
         Action = PEEP_ACTION_NONE_2;
         UpdateCurrentActionSpriteType();
         return { { x, y } };
     }
-    ActionSpriteImageOffset = peepAnimation[action_sprite_type].frame_offsets[ActionFrame];
+    ActionSpriteImageOffset = peepAnimation[ActionSpriteType].frame_offsets[ActionFrame];
 
     // If not throwing up and not at the frame where sick appears.
     if (Action != PEEP_ACTION_THROW_UP || ActionFrame != 15)
@@ -747,7 +747,7 @@ void Peep::PickupAbort(int32_t old_x)
         Action = PEEP_ACTION_NONE_2;
         special_sprite = 0;
         ActionSpriteImageOffset = 0;
-        action_sprite_type = PEEP_ACTION_SPRITE_TYPE_NONE;
+        ActionSpriteType = PEEP_ACTION_SPRITE_TYPE_NONE;
         PathCheckOptimisation = 0;
     }
 
@@ -796,13 +796,13 @@ bool Peep::Place(const TileCoordsXYZ& location, bool apply)
         Action = PEEP_ACTION_NONE_2;
         special_sprite = 0;
         ActionSpriteImageOffset = 0;
-        action_sprite_type = PEEP_ACTION_SPRITE_TYPE_NONE;
+        ActionSpriteType = PEEP_ACTION_SPRITE_TYPE_NONE;
         PathCheckOptimisation = 0;
         sprite_position_tween_reset();
 
         if (type == PEEP_TYPE_GUEST)
         {
-            action_sprite_type = PEEP_ACTION_SPRITE_TYPE_INVALID;
+            ActionSpriteType = PEEP_ACTION_SPRITE_TYPE_INVALID;
             happiness_target = std::max(happiness_target - 10, 0);
             UpdateCurrentActionSpriteType();
         }
@@ -1622,15 +1622,15 @@ Peep* Peep::Generate(const CoordsXYZ& coords)
     peep->special_sprite = 0;
     peep->ActionSpriteImageOffset = 0;
     peep->WalkingFrameNum = 0;
-    peep->action_sprite_type = PEEP_ACTION_SPRITE_TYPE_NONE;
+    peep->ActionSpriteType = PEEP_ACTION_SPRITE_TYPE_NONE;
     peep->PeepFlags = 0;
     peep->FavouriteRide = RIDE_ID_NULL;
     peep->FavouriteRideRating = 0;
 
     const rct_sprite_bounds* spriteBounds = g_peep_animation_entries[peep->sprite_type].sprite_bounds;
-    peep->sprite_width = spriteBounds[peep->action_sprite_type].sprite_width;
-    peep->sprite_height_negative = spriteBounds[peep->action_sprite_type].sprite_height_negative;
-    peep->sprite_height_positive = spriteBounds[peep->action_sprite_type].sprite_height_positive;
+    peep->sprite_width = spriteBounds[peep->ActionSpriteType].sprite_width;
+    peep->sprite_height_negative = spriteBounds[peep->ActionSpriteType].sprite_height_negative;
+    peep->sprite_height_positive = spriteBounds[peep->ActionSpriteType].sprite_height_positive;
 
     peep->MoveTo(coords);
     peep->sprite_direction = 0;
@@ -2237,10 +2237,10 @@ void peep_set_map_tooltip(Peep* peep)
 void Peep::SwitchNextActionSpriteType()
 {
     // TBD: Add nextActionSpriteType as function parameter and make peep->NextActionSpriteType obsolete?
-    if (NextActionSpriteType != action_sprite_type)
+    if (NextActionSpriteType != ActionSpriteType)
     {
         Invalidate();
-        action_sprite_type = NextActionSpriteType;
+        ActionSpriteType = NextActionSpriteType;
         const rct_sprite_bounds* spriteBounds = g_peep_animation_entries[sprite_type].sprite_bounds;
         sprite_width = spriteBounds[NextActionSpriteType].sprite_width;
         sprite_height_negative = spriteBounds[NextActionSpriteType].sprite_height_negative;
diff --git a/src/openrct2/peep/Peep.h b/src/openrct2/peep/Peep.h
index c5fe4e1d7e..c401b11197 100644
--- a/src/openrct2/peep/Peep.h
+++ b/src/openrct2/peep/Peep.h
@@ -654,7 +654,7 @@ struct Peep : SpriteBase
     };
     // Normally 0, 1 for carrying sliding board on spiral slide ride, 2 for carrying lawn mower
     uint8_t special_sprite;
-    PeepActionSpriteType action_sprite_type;
+    PeepActionSpriteType ActionSpriteType;
     // Seems to be used like a local variable, as it's always set before calling SwitchNextActionSpriteType, which
     // reads this again
     PeepActionSpriteType NextActionSpriteType;
diff --git a/src/openrct2/peep/Staff.cpp b/src/openrct2/peep/Staff.cpp
index 7aaaade281..bea2d7e90b 100644
--- a/src/openrct2/peep/Staff.cpp
+++ b/src/openrct2/peep/Staff.cpp
@@ -1866,7 +1866,7 @@ void Staff::Tick128UpdateStaff()
         PeepFlags |= PEEP_FLAGS_SLOW_WALK;
     }
 
-    action_sprite_type = PEEP_ACTION_SPRITE_TYPE_INVALID;
+    ActionSpriteType = PEEP_ACTION_SPRITE_TYPE_INVALID;
     UpdateCurrentActionSpriteType();
 }
 
diff --git a/src/openrct2/rct1/S4Importer.cpp b/src/openrct2/rct1/S4Importer.cpp
index fb94cddf7d..07ca2fd9f5 100644
--- a/src/openrct2/rct1/S4Importer.cpp
+++ b/src/openrct2/rct1/S4Importer.cpp
@@ -1396,13 +1396,13 @@ private:
         dst->NextActionSpriteType = static_cast<PeepActionSpriteType>(src->next_action_sprite_type);
         dst->ActionSpriteImageOffset = src->action_sprite_image_offset;
         dst->WalkingFrameNum = src->no_action_frame_num;
-        dst->action_sprite_type = static_cast<PeepActionSpriteType>(src->action_sprite_type);
+        dst->ActionSpriteType = static_cast<PeepActionSpriteType>(src->action_sprite_type);
         dst->ActionFrame = src->action_frame;
 
         const rct_sprite_bounds* spriteBounds = g_peep_animation_entries[dst->sprite_type].sprite_bounds;
-        dst->sprite_width = spriteBounds[dst->action_sprite_type].sprite_width;
-        dst->sprite_height_negative = spriteBounds[dst->action_sprite_type].sprite_height_negative;
-        dst->sprite_height_positive = spriteBounds[dst->action_sprite_type].sprite_height_positive;
+        dst->sprite_width = spriteBounds[dst->ActionSpriteType].sprite_width;
+        dst->sprite_height_negative = spriteBounds[dst->ActionSpriteType].sprite_height_negative;
+        dst->sprite_height_positive = spriteBounds[dst->ActionSpriteType].sprite_height_positive;
 
         dst->MoveTo({ src->x, src->y, src->z });
         invalidate_sprite_2(dst);
diff --git a/src/openrct2/rct2/S6Exporter.cpp b/src/openrct2/rct2/S6Exporter.cpp
index d8341dd883..313833a7d8 100644
--- a/src/openrct2/rct2/S6Exporter.cpp
+++ b/src/openrct2/rct2/S6Exporter.cpp
@@ -1177,7 +1177,7 @@ void S6Exporter::ExportSpritePeep(RCT2SpritePeep* dst, const Peep* src)
     dst->current_train = src->current_train;
     dst->time_to_sitdown = src->time_to_sitdown;
     dst->special_sprite = src->special_sprite;
-    dst->action_sprite_type = static_cast<uint8_t>(src->action_sprite_type);
+    dst->action_sprite_type = static_cast<uint8_t>(src->ActionSpriteType);
     dst->next_action_sprite_type = static_cast<uint8_t>(src->NextActionSpriteType);
     dst->action_sprite_image_offset = src->ActionSpriteImageOffset;
     dst->action = static_cast<uint8_t>(src->Action);
diff --git a/src/openrct2/rct2/S6Importer.cpp b/src/openrct2/rct2/S6Importer.cpp
index d7f34cbad3..76884eca8f 100644
--- a/src/openrct2/rct2/S6Importer.cpp
+++ b/src/openrct2/rct2/S6Importer.cpp
@@ -1442,7 +1442,7 @@ public:
         dst->current_train = src->current_train;
         dst->time_to_sitdown = src->time_to_sitdown;
         dst->special_sprite = src->special_sprite;
-        dst->action_sprite_type = static_cast<PeepActionSpriteType>(src->action_sprite_type);
+        dst->ActionSpriteType = static_cast<PeepActionSpriteType>(src->action_sprite_type);
         dst->NextActionSpriteType = static_cast<PeepActionSpriteType>(src->next_action_sprite_type);
         dst->ActionSpriteImageOffset = src->action_sprite_image_offset;
         dst->Action = static_cast<PeepActionType>(src->action);
diff --git a/test/tests/S6ImportExportTests.cpp b/test/tests/S6ImportExportTests.cpp
index f26d313713..273be2a122 100644
--- a/test/tests/S6ImportExportTests.cpp
+++ b/test/tests/S6ImportExportTests.cpp
@@ -199,7 +199,7 @@ static void CompareSpriteDataPeep(const Peep& left, const Peep& right)
     COMPARE_FIELD(current_train);
     COMPARE_FIELD(time_to_sitdown);
     COMPARE_FIELD(special_sprite);
-    COMPARE_FIELD(action_sprite_type);
+    COMPARE_FIELD(ActionSpriteType);
     COMPARE_FIELD(NextActionSpriteType);
     COMPARE_FIELD(ActionSpriteImageOffset);
     COMPARE_FIELD(Action);