diff --git a/src/world/section.rs b/src/world/section.rs
index 5d2781a..e11f40a 100644
--- a/src/world/section.rs
+++ b/src/world/section.rs
@@ -217,24 +217,22 @@ impl<'a> BiomesV1_18<'a> {
 	}
 }
 
-/// Pre-v1.18 section biome data
+/// Pre-v1.18 section biome data variants
 ///
 /// There are a 3 formats for biome data that were used in
 /// different pre-v1.18 Minecraft versions
 #[derive(Debug)]
-pub enum BiomesV0<'a> {
-	IntArrayV15 {
-		data: &'a fastnbt::IntArray,
-		biome_types: &'a BiomeTypes,
-	},
-	IntArrayV0 {
-		data: &'a fastnbt::IntArray,
-		biome_types: &'a BiomeTypes,
-	},
-	ByteArray {
-		data: &'a fastnbt::ByteArray,
-		biome_types: &'a BiomeTypes,
-	},
+enum BiomesV0Data<'a> {
+	IntArrayV15(&'a fastnbt::IntArray),
+	IntArrayV0(&'a fastnbt::IntArray),
+	ByteArray(&'a fastnbt::ByteArray),
+}
+
+/// Pre-v1.18 section biome data
+#[derive(Debug)]
+pub struct BiomesV0<'a> {
+	data: BiomesV0Data<'a>,
+	biome_types: &'a BiomeTypes,
 }
 
 impl<'a> BiomesV0<'a> {
@@ -245,18 +243,19 @@ impl<'a> BiomesV0<'a> {
 		const BN: usize = N >> 2;
 		const BMAXY: usize = MAXY >> 2;
 
-		Ok(match biomes {
+		let data = match biomes {
 			Some(de::BiomesV0::IntArray(data)) if data.len() == BN * BN * BMAXY => {
-				BiomesV0::IntArrayV15 { data, biome_types }
+				BiomesV0Data::IntArrayV15(data)
 			}
 			Some(de::BiomesV0::IntArray(data)) if data.len() == N * N => {
-				BiomesV0::IntArrayV0 { data, biome_types }
+				BiomesV0Data::IntArrayV0(data)
 			}
 			Some(de::BiomesV0::ByteArray(data)) if data.len() == N * N => {
-				BiomesV0::ByteArray { data, biome_types }
+				BiomesV0Data::ByteArray(data)
 			}
 			_ => bail!("Invalid biome data"),
-		})
+		};
+		Ok(BiomesV0 { data, biome_types })
 	}
 }