diff --git a/lib/io/mesh_io.cpp b/lib/io/mesh_io.cpp
index 2acf56a..c1b924e 100644
--- a/lib/io/mesh_io.cpp
+++ b/lib/io/mesh_io.cpp
@@ -921,7 +921,6 @@ void gctl::mesh_io::add_data(std::string name, const array<double> &data,
 
     meshio_data new_data;
     new_data.enabled = true;
-    new_data.d_type = NodeData;
     new_data.str_tag.resize(1, name);
     new_data.real_tag.resize(1, 0.0);
     new_data.int_tag.resize(3, 0);
@@ -932,6 +931,7 @@ void gctl::mesh_io::add_data(std::string name, const array<double> &data,
 
     if (dtype == NodeData)
     {
+        new_data.d_type = NodeData;
         for (size_t i = 0; i < s; i++)
         {
             new_data.tar_ptrs[i] = selected_nodes_[i];
@@ -940,6 +940,7 @@ void gctl::mesh_io::add_data(std::string name, const array<double> &data,
     }
     else
     {
+        new_data.d_type = ElemData;
         for (size_t i = 0; i < s; i++)
         {
             new_data.tar_ptrs[i] = selected_elems_[i];