diff --git a/examples/dns.c b/examples/dns.c
index e6dee66dea00fb0274757722990a9a48c346807c..bc948c6b4e055ec31dbb1b74c3868dd9305a3e67 100644
--- a/examples/dns.c
+++ b/examples/dns.c
@@ -388,7 +388,7 @@ const HParser* init_parser() {
 				   h_int_range(h_uint16(), 255, 255),
 				   NULL);
 
-  const HParser *dns_question = h_sequence(h_sequence(h_many1(h_length_value(h_uint8(), 
+  const HParser *dns_question = h_sequence(h_sequence(h_many1(h_length_value(h_int_range(h_uint8(), 1, 255), 
 									     h_uint8())), 
 						      h_ch('\x00'),
 						      NULL),  // QNAME
@@ -405,12 +405,13 @@ const HParser* init_parser() {
 				     NULL);
 
 
-  dns_message = (HParser*)h_attr_bool(h_sequence(dns_header,
-						 h_many(dns_question),
-						 h_many(dns_rr),
-						 h_end_p(),
-						 NULL),
-				      validate_dns);
+  dns_message = (HParser*)h_action(h_attr_bool(h_sequence(dns_header,
+							  h_many(dns_question),
+							  h_many(dns_rr),
+							  h_end_p(),
+							  NULL),
+					       validate_dns),
+				   pack_dns_struct);
 
   return dns_message;
 }
diff --git a/src/hammer.h b/src/hammer.h
index 95da0eeda926d456ed3cba061a5b7571b4e99c14..62b5676610415b0a03a9546cea7b829b3477d658 100644
--- a/src/hammer.h
+++ b/src/hammer.h
@@ -229,7 +229,7 @@ const HParser* h_action(const HParser* p, const HAction a);
  *
  * Result token type: TT_UINT
  */
-const HParser* h_not_in(const uint8_t *charset, int length);
+const HParser* h_not_in(const uint8_t *charset, size_t length);
 
 /**
  * A no-argument parser that succeeds if there is no more input to