diff --git a/libasn1print/asn1print.c b/libasn1print/asn1print.c
index bf24818..6f67f2c 100644
--- a/libasn1print/asn1print.c
+++ b/libasn1print/asn1print.c
@@ -849,6 +849,8 @@
 
 	if(TQ_FIRST(&expr->members)) {
 		int extensible = 0;
+		if(expr->expr_type == ASN_BASIC_BIT_STRING)
+			dont_involve_children = 1;
 		printf(" (");
 		TQ_FOR(se, &(expr->members), next) {
 			if(se->expr_type == A1TC_EXTENSIBLE) {
@@ -870,6 +872,8 @@
 					printf("*");
 				else if(se->marker.flags)
 					printf("?");
+				else if(expr->expr_type == ASN_BASIC_BIT_STRING)
+					printf("?");
 			}
 			if(TQ_NEXT(se, next)
 			&& TQ_NEXT(se, next)->expr_type != A1TC_EXTENSIBLE) {