diff --git a/org/qmckl_ao.org b/org/qmckl_ao.org
index a79549a..7cc7eef 100644
--- a/org/qmckl_ao.org
+++ b/org/qmckl_ao.org
@@ -5376,6 +5376,7 @@ end function qmckl_compute_ao_vgl_doc_f
    | ~ao_vgl~              | ~double[point_num][5][ao_num]~ | out    | Value, gradients and Laplacian of the AOs    |
 
     #+begin_src c :comments org :tangle (eval c) :noweb yes  :exports none
+#ifdef HAVE_HPC
 qmckl_exit_code
 qmckl_compute_ao_vgl_hpc_gaussian (
           const qmckl_context context,
@@ -5655,6 +5656,7 @@ qmckl_compute_ao_vgl_hpc_gaussian (
   }
   return QMCKL_SUCCESS;
 }
+#endif
     #+end_src
 
 ** Interfaces
@@ -5681,6 +5683,7 @@ qmckl_compute_ao_vgl_hpc_gaussian (
           double* const ao_vgl );
     #+end_src
     #+begin_src c :tangle (eval h_private_func) :comments org
+#ifdef HAVE_HPC
     qmckl_exit_code qmckl_compute_ao_vgl_hpc_gaussian (
           const qmckl_context context,
           const int64_t ao_num,
@@ -5701,6 +5704,7 @@ qmckl_compute_ao_vgl_hpc_gaussian (
           const double* expo,
           const double* coef_normalized,
           double* const ao_vgl );
+#endif
     #+end_src
 
     #+CALL: generate_c_interface(table=qmckl_ao_vgl_args_doc,rettyp=get_value("CRetType"),fname="qmckl_compute_ao_vgl_doc"))