diff --git a/xs/src/TriangleMesh.cpp b/xs/src/TriangleMesh.cpp
index 134c529456..bc653d8ec5 100644
--- a/xs/src/TriangleMesh.cpp
+++ b/xs/src/TriangleMesh.cpp
@@ -27,19 +27,19 @@ TriangleMesh::TriangleMesh(const TriangleMesh &other)
     this->stl.heads = NULL;
     this->stl.tail  = NULL;
     if (other.stl.facet_start != NULL) {
-        this->stl.facet_start = new stl_facet[other.stl.stats.number_of_facets];
+        this->stl.facet_start = (stl_facet*)calloc(other.stl.stats.number_of_facets, sizeof(stl_facet));
         std::copy(other.stl.facet_start, other.stl.facet_start + other.stl.stats.number_of_facets, this->stl.facet_start);
     }
     if (other.stl.neighbors_start != NULL) {
-        this->stl.neighbors_start = new stl_neighbors[other.stl.stats.number_of_facets];
+        this->stl.neighbors_start = (stl_neighbors*)calloc(other.stl.stats.number_of_facets, sizeof(stl_neighbors));
         std::copy(other.stl.neighbors_start, other.stl.neighbors_start + other.stl.stats.number_of_facets, this->stl.neighbors_start);
     }
     if (other.stl.v_indices != NULL) {
-        this->stl.v_indices = new v_indices_struct[other.stl.stats.number_of_facets];
+        this->stl.v_indices = (v_indices_struct*)calloc(other.stl.stats.number_of_facets, sizeof(v_indices_struct));
         std::copy(other.stl.v_indices, other.stl.v_indices + other.stl.stats.number_of_facets, this->stl.v_indices);
     }
     if (other.stl.v_shared != NULL) {
-        this->stl.v_shared = new stl_vertex[other.stl.stats.shared_vertices];
+        this->stl.v_shared = (stl_vertex*)calloc(other.stl.stats.shared_vertices, sizeof(stl_vertex));
         std::copy(other.stl.v_shared, other.stl.v_shared + other.stl.stats.shared_vertices, this->stl.v_shared);
     }
 }