diff --git a/enumerate.c b/enumerate.c
index aa424e1..a0a0ad8 100644
--- a/enumerate.c
+++ b/enumerate.c
@@ -67,8 +67,8 @@ void balanced_thickening_callback(const bitvec_t *pos, int size, void *data)
     for(int i = 0; i < size; i++) {
       bit1 = i < size/2 ? bv_get_bit(pos, i) : !bv_get_bit(pos, size - 1 - i);
       for(int j = 0; j < info->rank; j++) {
-	left = info->dq->cosets[i].min->left[j]->coset - info->dq->cosets;
-	right = info->dq->cosets[i].min->right[j]->coset - info->dq->cosets;
+	left = info->dq->cosets[i].min->left[j]->coset->index;
+	right = info->dq->cosets[i].min->right[j]->coset->index;
 	bit2left = left < size/2 ? bv_get_bit(pos, left) : !bv_get_bit(pos, size - 1 - left);
 	bit2right = right < size/2 ? bv_get_bit(pos, right) : !bv_get_bit(pos, size - 1 - right);
 	if(bit1 != bit2left)
diff --git a/thickenings.c b/thickenings.c
index 58d1cd2..41d7a9b 100644
--- a/thickenings.c
+++ b/thickenings.c
@@ -99,9 +99,9 @@ static void generate_principal_ideals(doublequotient_t *dq, bitvec_t *pos, bitve
     queue_put(&queue, i);
     while((current = queue_get(&queue)) != -1)
       for(edge = dq->cosets[current].bruhat_lower; edge; edge = edge->next)
-	if(!principal[edge->to - dq->cosets]) {
-	  principal[edge->to - dq->cosets] = 1;
-	  queue_put(&queue, edge->to - dq->cosets);
+	if(!principal[edge->to->index]) {
+	  principal[edge->to->index] = 1;
+	  queue_put(&queue, edge->to->index);
 	}
 
     // copy the first half into bitvectors