diff --git a/src/supplicant/nm-supplicant-config.c b/src/supplicant/nm-supplicant-config.c
index b87acd696..1754bfff5 100644
--- a/src/supplicant/nm-supplicant-config.c
+++ b/src/supplicant/nm-supplicant-config.c
@@ -458,7 +458,7 @@ nm_supplicant_config_add_setting_macsec(NMSupplicantConfig *self,
                                              "mka_ckn",
                                              (char *) buffer_ckn,
                                              sizeof(buffer_ckn),
-                                             NULL,
+                                             value,
                                              error))
             return FALSE;
     }