diff --git a/drama/src/rev-mc.c b/drama/src/rev-mc.c
index 843ee9d..ed3b578 100644
--- a/drama/src/rev-mc.c
+++ b/drama/src/rev-mc.c
@@ -396,6 +396,7 @@ find_row_mask(std::vector<set_t> &sets,
                 }
 
                 for (int i = outer_step; i > 0 && cur_mask < last_mask; --i) {
+                    if (i % inner_step == 0) { try_update_row_mask(end_pos - i, cur_mask); }
                     if (resolve(cur_mask)) { set_found(cur_mask); }
                     cur_mask = next_bit_permutation(cur_mask);
                 }