diff --git a/src/initrd/nmi-cmdline-reader.c b/src/initrd/nmi-cmdline-reader.c
index 1f3d3a4d0c..02e4142b83 100644
--- a/src/initrd/nmi-cmdline-reader.c
+++ b/src/initrd/nmi-cmdline-reader.c
@@ -732,6 +732,9 @@ reader_parse_master(Reader *reader, char *argument, const char *type_name, const
         mtu = get_word(&argument, ':');
     }
 
+    if (mtu)
+        connection_set(connection, NM_SETTING_WIRED_SETTING_NAME, NM_SETTING_WIRED_MTU, mtu);
+
     do {
         slave = get_word(&slaves, ',');
         if (slave == NULL)
@@ -745,8 +748,6 @@ reader_parse_master(Reader *reader, char *argument, const char *type_name, const
                      NM_SETTING_CONNECTION_MASTER,
                      master,
                      NULL);
-        if (mtu)
-            connection_set(connection, NM_SETTING_WIRED_SETTING_NAME, NM_SETTING_WIRED_MTU, mtu);
     } while (slaves && *slaves != '\0');
 
     if (argument && *argument)
diff --git a/src/initrd/tests/test-cmdline-reader.c b/src/initrd/tests/test-cmdline-reader.c
index 6e9610c072..95acc91116 100644
--- a/src/initrd/tests/test-cmdline-reader.c
+++ b/src/initrd/tests/test-cmdline-reader.c
@@ -757,13 +757,14 @@ test_bond(void)
 {
     gs_unref_hashtable GHashTable *connections = NULL;
     const char *const *            ARGV        = NM_MAKE_STRV("rd.route=192.0.2.53::bong0",
-                                           "bond=bong0:eth0,eth1:mode=balance-rr",
+                                           "bond=bong0:eth0,eth1:mode=balance-rr:9000",
                                            "nameserver=203.0.113.53");
     NMConnection *                 connection;
     NMSettingConnection *          s_con;
     NMSettingIPConfig *            s_ip4;
     NMSettingIPConfig *            s_ip6;
     NMSettingBond *                s_bond;
+    NMSettingWired *               s_wired;
     NMIPRoute *                    ip_route;
     const char *                   master_uuid;
     gs_free char *                 hostname = NULL;
@@ -783,6 +784,10 @@ test_bond(void)
     master_uuid = nm_connection_get_uuid(connection);
     g_assert(master_uuid);
 
+    s_wired = nm_connection_get_setting_wired(connection);
+    g_assert(s_wired);
+    g_assert_cmpint(nm_setting_wired_get_mtu(s_wired), ==, 9000);
+
     s_ip4 = nm_connection_get_setting_ip4_config(connection);
     g_assert(s_ip4);
     g_assert_cmpstr(nm_setting_ip_config_get_method(s_ip4), ==, NM_SETTING_IP4_CONFIG_METHOD_AUTO);