diff --git a/src/tools/hexnet.cpp b/src/tools/hexnet.cpp
index c3d94ee..571a840 100644
--- a/src/tools/hexnet.cpp
+++ b/src/tools/hexnet.cpp
@@ -33,6 +33,7 @@
 #define EXIT_RUNTIME 1
 #define EXIT_USAGE 2
 #define EXIT_UNIMPLEMENTED 3
+#define EXIT_SIGNAL 4
 
 // TCP v4 server
 sockpp::tcp_socket tcpSocket;
@@ -62,7 +63,7 @@ void signalHandler(int signal) {
     }
 
     std::cerr << "Received signal " << signal << ", bye!" << std::endl;
-    std::exit(signal);
+    std::exit(EXIT_SIGNAL);
 }
 
 void readFromTCPSocket() {
@@ -137,7 +138,7 @@ int main(int argc, char* argv[]) {
     }
 
     if (!(ipv4 || ipv6) || (ipv4 && ipv6) || !(tcp || udp) || (tcp && udp)) {
-        std::cout << cliParser.getUsage() << std::endl;
+        std::cout << "Please specify which protocols to use (one of IPv4/IPv6, one of TCP/UDP)." << std::endl;
         return EXIT_USAGE;
     }