diff --git a/format.c b/format.c
index 203ec08..989e4ff 100644
--- a/format.c
+++ b/format.c
@@ -183,7 +183,7 @@ static void write_cs(void *km, kstring_t *s, const mm_idx_t *mi, const mm_bseq1_
 			mm_sprintf_lite(s, "-%s", tmp);
 			t_off += len;
 		} else { // op == 3 && len >= 4
-			mm_sprintf_lite(s, "^%c%c%d%c%c", "acgtn"[tseq[t_off]], "acgtn"[tseq[t_off+1]],
+			mm_sprintf_lite(s, "~%c%c%d%c%c", "acgtn"[tseq[t_off]], "acgtn"[tseq[t_off+1]],
 				len, "acgtn"[tseq[t_off+len-2]], "acgtn"[tseq[t_off+len-1]]);
 			t_off += len;
 		}
diff --git a/main.c b/main.c
index b9ec332..a1949b3 100644
--- a/main.c
+++ b/main.c
@@ -6,7 +6,7 @@
 #include "mmpriv.h"
 #include "getopt.h"
 
-#define MM_VERSION "2.2-r466-dirty"
+#define MM_VERSION "2.2-r468-dirty"
 
 #ifdef __linux__
 #include <sys/resource.h>