diff --git a/src/bin/minedmap/main.rs b/src/bin/minedmap/main.rs
index 22fed56..5e89025 100644
--- a/src/bin/minedmap/main.rs
+++ b/src/bin/minedmap/main.rs
@@ -26,8 +26,8 @@ fn main() -> Result<()> {
 	let config = Config::new(args);
 
 	let regions = RegionProcessor::new(&config).run()?;
-	TileRenderer::new(&config).run(regions.iter().copied())?;
-	TileMipmapper::new(&config).run(regions)?;
+	TileRenderer::new(&config).run(&regions)?;
+	TileMipmapper::new(&config).run(&regions)?;
 
 	Ok(())
 }
diff --git a/src/bin/minedmap/region_processor.rs b/src/bin/minedmap/region_processor.rs
index c5d2a7c..854c506 100644
--- a/src/bin/minedmap/region_processor.rs
+++ b/src/bin/minedmap/region_processor.rs
@@ -1,4 +1,4 @@
-use std::{collections::BTreeSet, path::Path};
+use std::path::Path;
 
 use anyhow::{Context, Result};
 
@@ -120,7 +120,7 @@ impl<'a> RegionProcessor<'a> {
 	/// Iterates over all region files of a Minecraft save directory
 	///
 	/// Returns a list of the coordinates of all processed regions
-	pub fn run(self) -> Result<BTreeSet<TileCoords>> {
+	pub fn run(self) -> Result<Vec<TileCoords>> {
 		let read_dir = self.config.region_dir.read_dir().with_context(|| {
 			format!(
 				"Failed to read directory {}",
@@ -131,7 +131,7 @@ impl<'a> RegionProcessor<'a> {
 		fs::create_dir_all(&self.config.processed_dir)?;
 		fs::create_dir_all(&self.config.tile_dir(TileKind::Lightmap, 0))?;
 
-		let mut ret = BTreeSet::new();
+		let mut ret = Vec::new();
 
 		for entry in read_dir.filter_map(|entry| entry.ok()).filter(|entry| {
 			// We are only interested in regular files
@@ -153,7 +153,7 @@ impl<'a> RegionProcessor<'a> {
 				);
 			}
 
-			ret.insert(coords);
+			ret.push(coords);
 		}
 
 		Ok(ret)
diff --git a/src/bin/minedmap/tile_mipmapper.rs b/src/bin/minedmap/tile_mipmapper.rs
index 8e1415e..f24a41e 100644
--- a/src/bin/minedmap/tile_mipmapper.rs
+++ b/src/bin/minedmap/tile_mipmapper.rs
@@ -1,5 +1,3 @@
-use std::collections::BTreeSet;
-
 use anyhow::{Context, Result};
 
 use minedmap::{io::fs, types::*};
@@ -100,11 +98,11 @@ impl<'a> TileMipmapper<'a> {
 		})
 	}
 
-	pub fn run(self, tiles: BTreeSet<TileCoords>) -> Result<Vec<TileCoordMap>> {
+	pub fn run(self, tiles: &[TileCoords]) -> Result<Vec<TileCoordMap>> {
 		let mut tile_stack = {
 			let mut tile_map = TileCoordMap::default();
 
-			for TileCoords { x, z } in tiles {
+			for &TileCoords { x, z } in tiles {
 				tile_map.0.entry(z).or_default().insert(x);
 			}
 
diff --git a/src/bin/minedmap/tile_renderer.rs b/src/bin/minedmap/tile_renderer.rs
index ee79883..2956081 100644
--- a/src/bin/minedmap/tile_renderer.rs
+++ b/src/bin/minedmap/tile_renderer.rs
@@ -80,10 +80,10 @@ impl<'a> TileRenderer<'a> {
 		})
 	}
 
-	pub fn run(self, regions: impl IntoIterator<Item = TileCoords>) -> Result<()> {
+	pub fn run(self, regions: &[TileCoords]) -> Result<()> {
 		fs::create_dir_all(&self.config.tile_dir(TileKind::Map, 0))?;
 
-		for coords in regions {
+		for &coords in regions {
 			if let Err(err) = self.render_tile(coords) {
 				eprintln!("Failed to render tile {:?}: {:?}", coords, err);
 			}