diff --git a/src/nmtui/nmt-wireguard-peer-editor.c b/src/nmtui/nmt-wireguard-peer-editor.c
index a78cfdf06..092a4ed70 100644
--- a/src/nmtui/nmt-wireguard-peer-editor.c
+++ b/src/nmtui/nmt-wireguard-peer-editor.c
@@ -237,11 +237,12 @@ nmt_wireguard_peer_editor_class_init(NmtWireguardPeerEditorClass *peer_class)
      *
      * The page's #NMWireGuardPeer.
      */
-    g_object_class_install_property(object_class,
-                                    PROP_PEER,
-                                    g_param_spec_boxed("peer",
-                                                       "",
-                                                       "",
-                                                       nm_wireguard_peer_get_type(),
-                                                       G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+    g_object_class_install_property(
+        object_class,
+        PROP_PEER,
+        g_param_spec_boxed("peer",
+                           "",
+                           "",
+                           nm_wireguard_peer_get_type(),
+                           G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
 }