diff --git a/align.c b/align.c
index 6eb5919..30fb02a 100644
--- a/align.c
+++ b/align.c
@@ -63,9 +63,8 @@ static void mm_append_cigar(mm_reg1_t *r, uint32_t n_cigar, uint32_t *cigar) //
 	if (r->p == 0) {
 		uint32_t capacity = n_cigar + sizeof(mm_extra_t);
 		kroundup32(capacity);
-		r->p = (mm_extra_t*)malloc(capacity * 4);
-		r->p->n_cigar = 0, r->p->capacity = capacity;
-		r->p->n_diff = r->p->n_ambi = 0;
+		r->p = (mm_extra_t*)calloc(capacity, 4);
+		r->p->capacity = capacity;
 	} else if (r->p->n_cigar + n_cigar + sizeof(mm_extra_t) > r->p->capacity) {
 		r->p->capacity = r->p->n_cigar + n_cigar + sizeof(mm_extra_t);
 		kroundup32(r->p->capacity);
diff --git a/map.c b/map.c
index 9310ec8..a8c6854 100644
--- a/map.c
+++ b/map.c
@@ -386,7 +386,12 @@ static void *worker_pipeline(void *shared, int step, void *in)
 				else printf("\t%d\t%d\t255", r->score, r->re - r->rs > r->qe - r->qs? r->re - r->rs : r->qe - r->qs);
 				printf("\tcm:i:%d", r->cnt);
 				if (r->parent == j) printf("\tss:i:%d", r->subsc);
-				if (r->p) printf("\tNM:i:%d\tAS:i:%d\tnn:i:%d", r->p->n_diff, r->p->score, r->p->n_ambi);
+				if (r->p) {
+					uint32_t k;
+					printf("\tNM:i:%d\tAS:i:%d\tnn:i:%d\tcg:Z:", r->p->n_diff, r->p->score, r->p->n_ambi);
+					for (k = 0; k < r->p->n_cigar; ++k)
+						printf("%d%c", r->p->cigar[k]>>4, "MID"[r->p->cigar[k]&0xf]);
+				}
 				putchar('\n');
 				free(r->p);
 			}