diff --git a/src/haproxy.c b/src/haproxy.c
index 63edbd6a8..22b6ffaee 100644
--- a/src/haproxy.c
+++ b/src/haproxy.c
@@ -454,10 +454,6 @@ static void display_build_opts()
 	       "\n");
 #endif
 
-#if defined(CONFIG_HAP_NS)
-	printf("Built with network namespace support\n");
-#endif
-
 	list_for_each_entry(item, &build_opts_list, list) {
 		puts(item->str);
 	}
diff --git a/src/namespace.c b/src/namespace.c
index e5ebfd776..a8f14c8b3 100644
--- a/src/namespace.c
+++ b/src/namespace.c
@@ -112,3 +112,9 @@ int my_socketat(const struct netns_entry *ns, int domain, int type, int protocol
 
 	return sock;
 }
+
+__attribute__((constructor))
+static void __ns_init(void)
+{
+	hap_register_build_opts("Built with network namespace support.", 0);
+}