diff --git a/include/armadillo_bits/op_inv_gen_meat.hpp b/include/armadillo_bits/op_inv_gen_meat.hpp
index 914a7e7c..63ae82e6 100644
--- a/include/armadillo_bits/op_inv_gen_meat.hpp
+++ b/include/armadillo_bits/op_inv_gen_meat.hpp
@@ -62,7 +62,7 @@ op_inv_gen_full::apply(Mat<typename T1::elem_type>& out, const Op<T1,op_inv_gen_
   {
   arma_extra_debug_sigprint();
   
-  const uword flags = X.in_aux_uword_a;
+  const uword flags = X.aux_uword_a;
   
   const bool status = op_inv_gen_full::apply_direct(out, X.m, "inv()", flags);
   
diff --git a/include/armadillo_bits/op_inv_spd_meat.hpp b/include/armadillo_bits/op_inv_spd_meat.hpp
index e4170dc3..925179d2 100644
--- a/include/armadillo_bits/op_inv_spd_meat.hpp
+++ b/include/armadillo_bits/op_inv_spd_meat.hpp
@@ -62,7 +62,7 @@ op_inv_spd_full::apply(Mat<typename T1::elem_type>& out, const Op<T1,op_inv_spd_
   {
   arma_extra_debug_sigprint();
   
-  const uword flags = X.in_aux_uword_a;
+  const uword flags = X.aux_uword_a;
   
   const bool status = op_inv_spd_full::apply_direct(out, X.m, flags);