diff --git a/apisix/admin/plugins.lua b/apisix/admin/plugins.lua
index d2cc1fabc76e8..3807231634018 100644
--- a/apisix/admin/plugins.lua
+++ b/apisix/admin/plugins.lua
@@ -17,7 +17,6 @@
 local require   = require
 local core = require("apisix.core")
 local check_schema = require("apisix.plugin").check_schema
-local stream_check_schema = require("apisix.plugin").stream_check_schema
 local ipairs    = ipairs
 local pcall     = pcall
 local table_sort = table.sort
@@ -33,11 +32,6 @@ function _M.check_schema(plugins_conf, schema_type)
 end
 
 
-function _M.stream_check_schema(plugins_conf, schema_type)
-    return stream_check_schema(plugins_conf, schema_type, false)
-end
-
-
 function _M.get(name)
     local arg = get_uri_args()
     if arg and arg["all"] == "true" then
diff --git a/apisix/admin/stream_routes.lua b/apisix/admin/stream_routes.lua
index de1e14daefe43..eef11abf42329 100644
--- a/apisix/admin/stream_routes.lua
+++ b/apisix/admin/stream_routes.lua
@@ -69,7 +69,7 @@ local function check_conf(id, conf, need_id)
         end
     end
 
-    local ok, err = stream_route_checker(conf)
+    local ok, err = stream_route_checker(conf, false)
     if not ok then
         return nil, {error_msg = err}
     end
diff --git a/apisix/plugin.lua b/apisix/plugin.lua
index f6ea4274350ed..1516502f32cce 100644
--- a/apisix/plugin.lua
+++ b/apisix/plugin.lua
@@ -709,9 +709,9 @@ function _M.plugin_checker(item, schema_type)
 end
 
 
-function _M.stream_plugin_checker(item)
+function _M.stream_plugin_checker(item, in_dp)
     if item.plugins then
-        return stream_check_schema(item.plugins, nil, true)
+        return stream_check_schema(item.plugins, nil, in_dp)
     end
 
     return true
diff --git a/apisix/stream/router/ip_port.lua b/apisix/stream/router/ip_port.lua
index 74563f9e4b839..b16b8bec95a7d 100644
--- a/apisix/stream/router/ip_port.lua
+++ b/apisix/stream/router/ip_port.lua
@@ -187,9 +187,9 @@ function _M.routes()
     return user_routes.values, user_routes.conf_version
 end
 
-local function stream_route_checker(item)
+local function stream_route_checker(item, in_dp)
     if item.plugins then
-        local err, message = stream_plugin_checker(item)
+        local err, message = stream_plugin_checker(item, in_dp)
         if not err then
             return err, message
         end
diff --git a/t/admin/stream-routes.t b/t/admin/stream-routes.t
index 5e90c423592a6..85c7d9a5b1147 100644
--- a/t/admin/stream-routes.t
+++ b/t/admin/stream-routes.t
@@ -562,3 +562,35 @@ GET /t
 GET /t
 --- no_error_log
 [error]
+
+
+
+=== TEST 15: set route with unknown plugin
+--- config
+    location /t {
+        content_by_lua_block {
+            local t = require("lib.test_admin").test
+            local code, body = t('/apisix/admin/stream_routes/1',
+                ngx.HTTP_PUT,
+                [[{
+                    "remote_addr": "127.0.0.1",
+                    "plugins": {
+                        "mqttt-proxy": {
+                        }
+                    }
+                }]]
+                )
+
+            if code >= 300 then
+                ngx.status = code
+            end
+            ngx.print(body)
+        }
+    }
+--- request
+GET /t
+--- error_code: 400
+--- response_body
+{"error_msg":"unknown plugin [mqttt-proxy]"}
+--- no_error_log
+[error]