diff --git a/luci-app-passwall2/luasrc/view/passwall2/node_list/link_share_man.htm b/luci-app-passwall2/luasrc/view/passwall2/node_list/link_share_man.htm
index 80003a302..42d8ddb1c 100644
--- a/luci-app-passwall2/luasrc/view/passwall2/node_list/link_share_man.htm
+++ b/luci-app-passwall2/luasrc/view/passwall2/node_list/link_share_man.htm
@@ -1083,7 +1083,7 @@ local api = require "luci.passwall2.api"
 				}
 			}
 
-			opt.set(dom_prefix + 'encryption', queryParam.encryption);
+			opt.set(dom_prefix + 'encryption', queryParam.encryption || "none");
 			if (queryParam.security) {
 				if (queryParam.security == "tls") {
 					opt.set(dom_prefix + 'tls', true);