diff --git a/meshers/blocky/voxel_blocky_model_mesh.cpp b/meshers/blocky/voxel_blocky_model_mesh.cpp
index 825cd80f5..d14da3883 100644
--- a/meshers/blocky/voxel_blocky_model_mesh.cpp
+++ b/meshers/blocky/voxel_blocky_model_mesh.cpp
@@ -134,7 +134,7 @@ void mul(Span<Vector3f> vectors, const Basis3f &basis) {
 
 } // namespace
 
-void rotate_mesh_arrays(Span<Vector3f> vertices, Span<Vector3f> normals, Span<float> &tangents, const Basis3f &basis) {
+void rotate_mesh_arrays(Span<Vector3f> vertices, Span<Vector3f> normals, Span<float> tangents, const Basis3f &basis) {
 	mul(vertices, basis);
 
 	if (tangents.size() == 0) {
diff --git a/meshers/blocky/voxel_blocky_model_mesh.h b/meshers/blocky/voxel_blocky_model_mesh.h
index 85809897d..fc09f874c 100644
--- a/meshers/blocky/voxel_blocky_model_mesh.h
+++ b/meshers/blocky/voxel_blocky_model_mesh.h
@@ -31,7 +31,7 @@ class VoxelBlockyModelMesh : public VoxelBlockyModel {
 	float _side_vertex_tolerance = 0.001f;
 };
 
-void rotate_mesh_arrays(Span<Vector3f> vertices, Span<Vector3f> normals, Span<float> &tangents, const Basis3f &basis);
+void rotate_mesh_arrays(Span<Vector3f> vertices, Span<Vector3f> normals, Span<float> tangents, const Basis3f &basis);
 
 } // namespace zylann::voxel