2 files changed, 3 insertions, 3 deletions
diff --git a/src/main.c b/src/main.c
index 44d831d..f69f4e3 100644
--- a/src/main.c
+++ b/src/main.c
@@ -180,7 +180,7 @@ static int parse_argv(int argc, char **argv)
 
 		case 'h':
 			puts("usage: " PROGRAM_NAME " [-h] [-v] [-p PORT] [-l LISTS-FILE]");
-			exit();
+			exit(0);
 
 		case 'p':
 			config.port = atoi(optarg);
diff --git a/src/shared.h b/src/shared.h
index 46c900e..bf4adeb 100644
--- a/src/shared.h
+++ b/src/shared.h
@@ -42,9 +42,9 @@ Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
 #define LOCALHOST_NETWORK 0x7F000000
 #define LOCALHOST_MASK    0xFF000000
 
-#define REQUEST_HEADER "query "
+#define REQUEST_HEADER "\xFF\xFF\xFF\xFFsm2query "
 #define REQUEST_HEADER_LEN (sizeof(REQUEST_HEADER) - 1)
-#define RESPONSE_HEADER "reply "
+#define RESPONSE_HEADER "\xFF\xFF\xFF\xFFsm2reply "
 
 // main.c