diff --git a/org/qmckl_local_energy.org b/org/qmckl_local_energy.org
index 802fa2a..22df37e 100644
--- a/org/qmckl_local_energy.org
+++ b/org/qmckl_local_energy.org
@@ -1219,6 +1219,7 @@ integer function qmckl_compute_local_energy_f(context, walk_num, &
      return
   endif
 
+  e_local = 0.0d0
   do iwalk = 1, walk_num
     e_local(iwalk) = e_local(iwalk) + e_kin(iwalk) + e_pot(iwalk)
   end do