diff --git a/src/decoration.c b/src/decoration.c
index 18d6e2e680..98c6dba176 100644
--- a/src/decoration.c
+++ b/src/decoration.c
@@ -1921,7 +1921,7 @@ static void ClearPlaceDecorationGraphicsDataBuffer(struct PlaceDecorationGraphic
 
 static void CopyPalette(u16 *dest, u16 pal)
 {
-    CpuFastCopy(&((u16 *)gTilesetPointer_SecretBase->palettes)[pal * 16], dest, sizeof(u16) * 16);
+    CpuFastCopy(&gTilesetPointer_SecretBase->palettes[pal], dest, PLTT_SIZE_4BPP);
 }
 
 static void CopyTile(u8 *dest, u16 tile)
@@ -1934,7 +1934,7 @@ static void CopyTile(u8 *dest, u16 tile)
     if (tile != 0)
         tile &= 0x03FF;
 
-    CpuFastCopy(&((u8 *)gTilesetPointer_SecretBase->tiles)[tile * TILE_SIZE_4BPP], buffer, TILE_SIZE_4BPP);
+    CpuFastCopy(&gTilesetPointer_SecretBase->tiles[tile * TILE_SIZE_4BPP / sizeof(u32)], buffer, TILE_SIZE_4BPP);
     switch (mode)
     {
     case 0:
@@ -1976,7 +1976,7 @@ static void SetDecorSelectionBoxTiles(struct PlaceDecorationGraphicsDataBuffer *
 
 static u16 GetMetatile(u16 tile)
 {
-    return ((u16 *)gTilesetPointer_SecretBaseRedCave->metatiles)[tile] & 0xFFF;
+    return gTilesetPointer_SecretBaseRedCave->metatiles[tile] & 0xFFF;
 }
 
 static void SetDecorSelectionMetatiles(struct PlaceDecorationGraphicsDataBuffer *data)
@@ -2047,7 +2047,7 @@ static u8 gpu_pal_decompress_alloc_tag_and_upload(struct PlaceDecorationGraphics
     SetDecorSelectionMetatiles(data);
     SetDecorSelectionBoxOamAttributes(data->decoration->shape);
     SetDecorSelectionBoxTiles(data);
-    CopyPalette(data->palette, ((u16 *)gTilesetPointer_SecretBaseRedCave->metatiles)[(data->decoration->tiles[0] * NUM_TILES_PER_METATILE) + 7] >> 12);
+    CopyPalette(data->palette, gTilesetPointer_SecretBaseRedCave->metatiles[(data->decoration->tiles[0] * NUM_TILES_PER_METATILE) + 7] >> 12);
     LoadSpritePalette(&sSpritePal_PlaceDecoration);
     return CreateSprite(&sDecorationSelectorSpriteTemplate, 0, 0, 0);
 }
@@ -2103,7 +2103,7 @@ static u8 AddDecorationIconObjectFromObjectEvent(u16 tilesTag, u16 paletteTag, u
         SetDecorSelectionMetatiles(&sPlaceDecorationGraphicsDataBuffer);
         SetDecorSelectionBoxOamAttributes(sPlaceDecorationGraphicsDataBuffer.decoration->shape);
         SetDecorSelectionBoxTiles(&sPlaceDecorationGraphicsDataBuffer);
-        CopyPalette(sPlaceDecorationGraphicsDataBuffer.palette, ((u16 *)gTilesetPointer_SecretBaseRedCave->metatiles)[(sPlaceDecorationGraphicsDataBuffer.decoration->tiles[0] * NUM_TILES_PER_METATILE) + 7] >> 12);
+        CopyPalette(sPlaceDecorationGraphicsDataBuffer.palette, gTilesetPointer_SecretBaseRedCave->metatiles[(sPlaceDecorationGraphicsDataBuffer.decoration->tiles[0] * NUM_TILES_PER_METATILE) + 7] >> 12);
         sheet.data = sPlaceDecorationGraphicsDataBuffer.image;
         sheet.size = sDecorShapeSizes[sPlaceDecorationGraphicsDataBuffer.decoration->shape] * TILE_SIZE_4BPP;
         sheet.tag = tilesTag;