diff --git a/luci-app-passwall/luasrc/model/cbi/passwall/client/type/ray.lua b/luci-app-passwall/luasrc/model/cbi/passwall/client/type/ray.lua
index 9f0868a80..c78de6433 100644
--- a/luci-app-passwall/luasrc/model/cbi/passwall/client/type/ray.lua
+++ b/luci-app-passwall/luasrc/model/cbi/passwall/client/type/ray.lua
@@ -27,6 +27,7 @@ local header_type_list = {
 	"none", "srtp", "utp", "wechat-video", "dtls", "wireguard"
 }
 
+local xray_version = api.get_app_version("xray")
 -- [[ Xray ]]
 
 s.fields["type"]:value(type_name, "Xray")
@@ -106,9 +107,11 @@ o:value("leastPing")
 o.default = "leastPing"
 
 -- Fallback Node
-if api.compare_versions(api.get_app_version("xray"), ">=", "1.8.10") then
+if api.compare_versions(xray_version, ">=", "1.8.10") then
 	local o = s:option(ListValue, option_name("fallback_node"), translate("Fallback Node"))
-	o:depends({ [option_name("balancingStrategy")] = "leastPing" })
+	if api.compare_versions(xray_version, "<", "1.8.12") then
+		o:depends({ [option_name("balancingStrategy")] = "leastPing" })
+	end
 	o:value("",translate("Null"))
 	o.default = ""
 	local function check_fallback_chain(fb)
@@ -130,6 +133,7 @@ end
 -- 探测地址
 local o = s:option(Flag, option_name("useCustomProbeUrl"), translate("Use Custome Probe URL"), translate("By default the built-in probe URL will be used, enable this option to use a custom probe URL."))
 o:depends({ [option_name("balancingStrategy")] = "leastPing" })
+o:depends({ [option_name("fallback_node")] = "", ["!reverse"] = true })
 
 local o = s:option(Value, option_name("probeUrl"), translate("Probe URL"))
 o:depends({ [option_name("useCustomProbeUrl")] = true })
@@ -139,6 +143,7 @@ o.description = translate("The URL used to detect the connection status.")
 -- 探测间隔
 local o = s:option(Value, option_name("probeInterval"), translate("Probe Interval"))
 o:depends({ [option_name("balancingStrategy")] = "leastPing" })
+o:depends({ [option_name("fallback_node")] = "", ["!reverse"] = true })
 o.default = "1m"
 o.description = translate("The interval between initiating probes. Every time this time elapses, a server status check is performed on a server. The time format is numbers + units, such as '10s', '2h45m', and the supported time units are <code>ns</code>, <code>us</code>, <code>ms</code>, <code>s</code>, <code>m</code>, <code>h</code>, which correspond to nanoseconds, microseconds, milliseconds, seconds, minutes, and hours, respectively.")
 
@@ -401,7 +406,7 @@ o = s:option(Value, option_name("wireguard_mtu"), translate("MTU"))
 o.default = "1420"
 o:depends({ [option_name("protocol")] = "wireguard" })
 
-if api.compare_versions(api.get_app_version("xray"), ">=", "1.8.0") then
+if api.compare_versions(xray_version, ">=", "1.8.0") then
 	o = s:option(Value, option_name("wireguard_reserved"), translate("Reserved"), translate("Decimal numbers separated by \",\" or Base64-encoded strings."))
 	o:depends({ [option_name("protocol")] = "wireguard" })
 end
diff --git a/luci-app-passwall/luasrc/passwall/util_xray.lua b/luci-app-passwall/luasrc/passwall/util_xray.lua
index 860f90926..6ab30ae53 100644
--- a/luci-app-passwall/luasrc/passwall/util_xray.lua
+++ b/luci-app-passwall/luasrc/passwall/util_xray.lua
@@ -693,7 +693,8 @@ function gen_config(var)
 
 			-- fallback node
 			local fallback_node_id = _node.fallback_node
-			if fallback_node_id and fallback_node_id ~= "" then
+			if fallback_node_id == "" then fallback_node_id = nil
+			if fallback_node_id then
 				local is_new_node = true
 				for _, outbound in ipairs(outbounds) do
 					if outbound.tag == fallback_node_id then
@@ -723,7 +724,7 @@ function gen_config(var)
 				fallbackTag = fallback_node_id,
 				strategy = { type = _node.balancingStrategy or "random" }
 			})
-			if _node.balancingStrategy == "leastPing" then
+			if _node.balancingStrategy == "leastPing" or fallback_node_id then
 				if not observatory then
 					observatory = {
 						subjectSelector = { "blc-" },