diff --git a/src/openrct2/rct12/RCT12.h b/src/openrct2/rct12/RCT12.h
index 625e1d27d1..0533655887 100644
--- a/src/openrct2/rct12/RCT12.h
+++ b/src/openrct2/rct12/RCT12.h
@@ -170,11 +170,12 @@ struct RCT12TileElement : public RCT12TileElementBase
 assert_struct_size(RCT12TileElement, 8);
 struct RCT12SurfaceElement : RCT12TileElementBase
 {
+private:
     uint8_t slope;        // 4 0xE0 Edge Style, 0x1F Slope
     uint8_t terrain;      // 5 0xE0 Terrain Style, 0x1F Water height
     uint8_t grass_length; // 6
     uint8_t ownership;    // 7
-
+public:
     uint8_t GetSlope() const;
     uint32_t GetSurfaceStyle() const;
     uint32_t GetEdgeStyle() const;
@@ -187,6 +188,7 @@ struct RCT12SurfaceElement : RCT12TileElementBase
 assert_struct_size(RCT12SurfaceElement, 8);
 struct RCT12PathElement : RCT12TileElementBase
 {
+private:
     uint8_t entryIndex; // 4, 0xF0 Path type, 0x08 Ride sign, 0x04 Set when path is sloped, 0x03 Rotation
     uint8_t additions;  // 5, 0bGSSSAAAA: G = Ghost, S = station index, A = addition (0 means no addition)
     uint8_t edges;      // 6
@@ -196,6 +198,7 @@ struct RCT12PathElement : RCT12TileElementBase
         uint8_t rideIndex;
     };
 
+public:
     uint8_t GetEntryIndex() const;
     uint8_t GetQueueBannerDirection() const;
     bool IsSloped() const;
@@ -218,6 +221,7 @@ struct RCT12PathElement : RCT12TileElementBase
 assert_struct_size(RCT12PathElement, 8);
 struct RCT12TrackElement : RCT12TileElementBase
 {
+private:
     uint8_t trackType; // 4
     union
     {
@@ -240,7 +244,7 @@ struct RCT12TrackElement : RCT12TileElementBase
         uint16_t mazeEntry; // 5
     };
     uint8_t rideIndex; // 7
-
+public:
     uint8_t GetTrackType() const;
     uint8_t GetSequenceIndex() const;
     uint8_t GetRideIndex() const;
@@ -264,11 +268,12 @@ struct RCT12TrackElement : RCT12TileElementBase
 assert_struct_size(RCT12TrackElement, 8);
 struct RCT12SmallSceneryElement : RCT12TileElementBase
 {
+private:
     uint8_t entryIndex; // 4
     uint8_t age;        // 5
     uint8_t colour_1;   // 6
     uint8_t colour_2;   // 7
-
+public:
     uint8_t GetEntryIndex() const;
     uint8_t GetAge() const;
     uint8_t GetSceneryQuadrant() const;
@@ -279,9 +284,10 @@ struct RCT12SmallSceneryElement : RCT12TileElementBase
 assert_struct_size(RCT12SmallSceneryElement, 8);
 struct RCT12LargeSceneryElement : RCT12TileElementBase
 {
+private:
     uint16_t entryIndex; // 4
     uint8_t colour[2];   // 6
-
+public:
     uint32_t GetEntryIndex() const;
     uint16_t GetSequenceIndex() const;
     colour_t GetPrimaryColour() const;
@@ -291,6 +297,7 @@ struct RCT12LargeSceneryElement : RCT12TileElementBase
 assert_struct_size(RCT12LargeSceneryElement, 8);
 struct RCT12WallElement : RCT12TileElementBase
 {
+private:
     uint8_t entryIndex; // 4
     union
     {
@@ -299,7 +306,7 @@ struct RCT12WallElement : RCT12TileElementBase
     };
     uint8_t colour_1;  // 6 0b_2221_1111 2 = colour_2 (uses flags for rest of colour2), 1 = colour_1
     uint8_t animation; // 7 0b_dfff_ft00 d = direction, f = frame num, t = across track flag (not used)
-
+public:
     uint8_t GetEntryIndex() const;
     uint8_t GetSlope() const;
     colour_t GetPrimaryColour() const;
@@ -315,11 +322,12 @@ struct RCT12WallElement : RCT12TileElementBase
 assert_struct_size(RCT12WallElement, 8);
 struct RCT12EntranceElement : RCT12TileElementBase
 {
+private:
     uint8_t entranceType; // 4
     uint8_t index;        // 5. 0bUSSS????, S = station index.
     uint8_t pathType;     // 6
     uint8_t rideIndex;    // 7
-
+public:
     uint8_t GetEntranceType() const;
     uint8_t GetRideIndex() const;
     uint8_t GetStationIndex() const;
@@ -329,11 +337,15 @@ struct RCT12EntranceElement : RCT12TileElementBase
 assert_struct_size(RCT12EntranceElement, 8);
 struct RCT12BannerElement : RCT12TileElementBase
 {
+private:
     BannerIndex index; // 4
     uint8_t position;  // 5
     uint8_t flags;     // 6
-    uint8_t unused;    // 7
-
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunused-private-field"
+    uint8_t unused; // 7
+#pragma clang diagnostic pop
+public:
     BannerIndex GetIndex() const;
     uint8_t GetPosition() const;
     uint8_t GetAllowedEdges() const;