cleanup

1 files changed, 5 insertions, 0 deletions

diff --git a/src/firejail/protocol.c b/src/firejail/protocol.c
index 5f730afef..8e75277c2 100644
--- a/src/firejail/protocol.c
+++ b/src/firejail/protocol.c
@@ -74,6 +74,11 @@ static struct sock_filter *find_protocol_domain(const char *p) {
 
 // --debug-protocols
 void protocol_list(void) {
+#ifndef SYS_socket
+        fprintf(stderr, "Warning: --protocol not supported on this platform\n");
+        return;
+#endif
+
         int i = 0;
         while (protocol[i] != NULL) {
                 printf("%s, ", protocol[i]);