diff --git a/leenkx/Sources/iron/data/TerrainStream.hx b/leenkx/Sources/iron/data/TerrainStream.hx
index 126e2f6..cdf314e 100644
--- a/leenkx/Sources/iron/data/TerrainStream.hx
+++ b/leenkx/Sources/iron/data/TerrainStream.hx
@@ -114,6 +114,7 @@ class TerrainStream {
 
 		var rawmeshData: TMeshData = {
 			name: "Terrain",
+			sorting_index: 0,
 			vertex_arrays: [pos, nor, tex],
 			index_arrays: [ind],
 			scale_pos: scalePos,
diff --git a/leenkx/Sources/leenkx/trait/PhysicsBreak.hx b/leenkx/Sources/leenkx/trait/PhysicsBreak.hx
index f100a57..cf5ad57 100644
--- a/leenkx/Sources/leenkx/trait/PhysicsBreak.hx
+++ b/leenkx/Sources/leenkx/trait/PhysicsBreak.hx
@@ -580,6 +580,7 @@ class ConvexBreaker {
 
 		var rawmesh: TMeshData = {
 			name: "TempMesh" + (meshIndex++),
+			sorting_index: 0,
 			vertex_arrays: [pos, nor],
 			index_arrays: [indices],
 			scale_pos: maxdim