diff --git a/src/server/terrain/SurfaceMap.zig b/src/server/terrain/SurfaceMap.zig
index 5170b229..e2762268 100644
--- a/src/server/terrain/SurfaceMap.zig
+++ b/src/server/terrain/SurfaceMap.zig
@@ -7,6 +7,7 @@ const Chunk = main.chunk.Chunk;
 const ChunkPosition = main.chunk.ChunkPosition;
 const Cache = main.utils.Cache;
 const JsonElement = main.JsonElement;
+const Vec3d = main.vec.Vec3d;
 
 const terrain = @import("terrain.zig");
 const TerrainGenerationProfile = terrain.TerrainGenerationProfile;
@@ -39,6 +40,19 @@ pub const MapFragmentPosition = struct {
 	pub fn hashCode(self: MapFragmentPosition) u32 {
 		return @bitCast((self.wx >> (MapFragment.mapShift + self.voxelSizeShift))*%33 +% (self.wz >> (MapFragment.mapShift + self.voxelSizeShift)) ^ self.voxelSize);
 	}
+
+	pub fn getMinDistanceSquared(self: MapFragmentPosition, playerPosition: Vec3d, comptime width: comptime_int) f64 {
+		const halfWidth: f64 = @floatFromInt(self.voxelSize*@divExact(width, 2));
+		var dx = @abs(@as(f64, @floatFromInt(self.wx)) + halfWidth - playerPosition[0]);
+		var dz = @abs(@as(f64, @floatFromInt(self.wz)) + halfWidth - playerPosition[2]);
+		dx = @max(0, dx - halfWidth);
+		dz = @max(0, dz - halfWidth);
+		return dx*dx + dz*dz;
+	}
+
+	pub fn getPriority(self: MapFragmentPosition, playerPos: Vec3d, comptime width: comptime_int) f32 {
+		return -@as(f32, @floatCast(self.getMinDistanceSquared(playerPos, width)))/@as(f32, @floatFromInt(self.voxelSize*self.voxelSize)) + 2*@as(f32, @floatFromInt(std.math.log2_int(u31, self.voxelSize)))*width*width;
+	}
 };
 
 /// Generates and stores the height and Biome maps of the planet.
diff --git a/src/server/world.zig b/src/server/world.zig
index b59f02ff..79c04491 100644
--- a/src/server/world.zig
+++ b/src/server/world.zig
@@ -127,8 +127,7 @@ const ChunkManager = struct {
 
 		pub fn getPriority(self: *LightMapLoadTask) f32 {
 			if(self.source) |user| {
-				const pos = ChunkPosition{.wx = self.pos.wx, .wy = @intFromFloat(user.player.pos[1]), .wz = self.pos.wz, .voxelSize = self.pos.voxelSize};
-				return pos.getPriority(user.player.pos) + 100000;
+				return self.pos.getPriority(user.player.pos, terrain.LightMap.LightMapFragment.mapSize) + 100;
 			} else {
 				return std.math.floatMax(f32);
 			}