diff --git a/luci-app-ssr-plus/root/usr/share/shadowsocksr/gen_config.lua b/luci-app-ssr-plus/root/usr/share/shadowsocksr/gen_config.lua
index 75133640371..adcd0e16f45 100755
--- a/luci-app-ssr-plus/root/usr/share/shadowsocksr/gen_config.lua
+++ b/luci-app-ssr-plus/root/usr/share/shadowsocksr/gen_config.lua
@@ -636,7 +636,7 @@ Xray.outbounds = {
 			} or nil,
 			grpcSettings = (server.transport == "grpc") and {
 				-- grpc
-				serviceName = (server.serviceName and server.serviceName ~= "") and server.serviceName or nil,
+				serviceName = (server.serviceName and server.serviceName ~= "") and server.serviceName or "",
 				multiMode = (server.grpc_mode == "multi") and true or nil,
 				idle_timeout = server.idle_timeout and (tonumber(server.idle_timeout) < 10 and 10 or tonumber(server.idle_timeout)) or nil,
 				health_check_timeout = server.health_check_timeout and tonumber(server.health_check_timeout) or nil,
diff --git a/luci-app-ssr-plus/root/usr/share/shadowsocksr/subscribe.lua b/luci-app-ssr-plus/root/usr/share/shadowsocksr/subscribe.lua
index 7f33052c673..89c6ad2e398 100755
--- a/luci-app-ssr-plus/root/usr/share/shadowsocksr/subscribe.lua
+++ b/luci-app-ssr-plus/root/usr/share/shadowsocksr/subscribe.lua
@@ -1379,7 +1379,7 @@ local function processData(szType, content, cfgid)
 				result.quic_security = params.quicSecurity or "none"
 				result.quic_key = params.key
 			elseif result.transport == "grpc" then
-				result.serviceName = params.serviceName
+				result.serviceName = params.serviceName or params.servicename or params.path
 				result.grpc_mode = params.mode or "gun"
 			elseif result.transport == "tcp" or result.transport == "raw" then
 				result.tcp_guise = params.headerType or "none"
@@ -1714,7 +1714,7 @@ local function processData(szType, content, cfgid)
 			result.quic_security = params.quicSecurity or "none"
 			result.quic_key = params.key
 		elseif result.transport == "grpc" then
-			result.serviceName = params.serviceName
+			result.serviceName = params.serviceName or params.servicename or params.path
 			result.grpc_mode = params.mode or "gun"
 		elseif result.transport == "tcp" or result.transport == "raw" then
 			result.tcp_guise = params.headerType and params.headerType ~= "" and params.headerType or "none"
@@ -1852,7 +1852,7 @@ local function processData(szType, content, cfgid)
 			result.quic_security = params.quicSecurity or "none"
 			result.quic_key = params.key
 		elseif result.transport == "grpc" then
-			result.serviceName = params.serviceName
+			result.serviceName = params.serviceName or params.servicename or params.path
 			result.grpc_mode = params.mode or "gun"
 		elseif result.transport == "raw" then
 			result.tcp_guise = params.headerType or "none"