diff --git a/src/nspawn/nspawn-register.c b/src/nspawn/nspawn-register.c
index c0cdb7c0d7..05849e468b 100644
--- a/src/nspawn/nspawn-register.c
+++ b/src/nspawn/nspawn-register.c
@@ -20,8 +20,7 @@ static int append_machine_properties(
                 sd_bus_message *m,
                 CustomMount *mounts,
                 unsigned n_mounts,
-                int kill_signal,
-                char **properties) {
+                int kill_signal) {
 
         unsigned j;
         int r;
@@ -186,8 +185,7 @@ int register_machine(
                                 m,
                                 mounts,
                                 n_mounts,
-                                kill_signal,
-                                properties);
+                                kill_signal);
                 if (r < 0)
                         return r;
 
@@ -322,8 +320,7 @@ int allocate_scope(
                         m,
                         mounts,
                         n_mounts,
-                        kill_signal,
-                        properties);
+                        kill_signal);
         if (r < 0)
                 return r;
 
diff --git a/src/nspawn/nspawn.c b/src/nspawn/nspawn.c
index 7f11d66062..2fcbf64af7 100644
--- a/src/nspawn/nspawn.c
+++ b/src/nspawn/nspawn.c
@@ -586,8 +586,7 @@ static int parse_argv(int argc, char *argv[]) {
                                 return -EINVAL;
                         }
 
-                        free(arg_network_zone);
-                        arg_network_zone = j;
+                        free_and_replace(arg_network_zone, j);
 
                         arg_network_veth = true;
                         arg_private_network = true;
@@ -4591,10 +4590,15 @@ finish:
         strv_free(arg_network_ipvlan);
         strv_free(arg_network_veth_extra);
         strv_free(arg_parameters);
+        free(arg_network_zone);
+        free(arg_network_namespace_path);
+        strv_free(arg_property);
         custom_mount_free_all(arg_custom_mounts, arg_n_custom_mounts);
         expose_port_free_all(arg_expose_ports);
         free(arg_root_hash);
         rlimit_free_all(arg_rlimit);
+        strv_free(arg_syscall_whitelist);
+        strv_free(arg_syscall_blacklist);
         arg_cpuset = cpu_set_mfree(arg_cpuset);
 
         return r < 0 ? EXIT_FAILURE : ret;