diff --git a/src/KOKKOS/sna_kokkos_impl.h b/src/KOKKOS/sna_kokkos_impl.h
index 8f28c2ada6..7a4fdd0ece 100644
--- a/src/KOKKOS/sna_kokkos_impl.h
+++ b/src/KOKKOS/sna_kokkos_impl.h
@@ -55,6 +55,7 @@ SNAKokkos<DeviceType, real_type, vector_length>::SNAKokkos(real_type rfac0_in,
   ncoeff = compute_ncoeff();
 
   nmax = 0;
+  natom = 0;
 
   build_indexlist();