diff --git a/README.md b/README.md
index 5c76743d61..8a5f273f6b 100644
--- a/README.md
+++ b/README.md
@@ -109,7 +109,7 @@ Options:
   --client-web-socket-url-protocol <value>  Tells clients connected to devServer to use the provided protocol.
   --client-web-socket-url-username <value>  Tells clients connected to devServer to use the provided username to authenticate.
   --client-web-socket-url-password <value>  Tells clients connected to devServer to use the provided password to authenticate.
-  --web-socket-server <value>               Deprecated: please use 'webSocketServer.type'/'--web-socket-server-type' option. Allows to set web socket server and options (by default 'ws').
+  --web-socket-server <value>               Deprecated: please use '--web-socket-server-type' option. Allows to set web socket server and options (by default 'ws').
   --no-web-socket-server                    Negative 'web-socket-server' option.
   --web-socket-server-type <value>          Allows to set web socket server and options (by default 'ws').
   --compress                                Enables gzip compression for everything served.
diff --git a/bin/cli-flags.js b/bin/cli-flags.js
index a956878103..2b991c55b6 100644
--- a/bin/cli-flags.js
+++ b/bin/cli-flags.js
@@ -319,7 +319,7 @@ module.exports = {
     configs: [
       {
         description:
-          "Deprecated: please use 'webSocketServer.type'/'--web-socket-server-type' option.",
+          "Deprecated: please use '--web-socket-server-type' option.",
         multiple: false,
         path: "webSocketServer",
         type: "enum",
@@ -327,7 +327,7 @@ module.exports = {
       },
       {
         description:
-          "Deprecated: please use 'webSocketServer.type'/'--web-socket-server-type' option.",
+          "Deprecated: please use '--web-socket-server-type' option.",
         multiple: false,
         path: "webSocketServer",
         type: "enum",
@@ -343,7 +343,7 @@ module.exports = {
     ],
 
     description:
-      "Deprecated: please use 'webSocketServer.type'/'--web-socket-server-type' option. Allows to set web socket server and options (by default 'ws').",
+      "Deprecated: please use '--web-socket-server-type' option. Allows to set web socket server and options (by default 'ws').",
     simpleType: "string",
     multiple: false,
   },
diff --git a/lib/options.json b/lib/options.json
index 4d1649a10f..1746006455 100644
--- a/lib/options.json
+++ b/lib/options.json
@@ -1031,7 +1031,7 @@
           "$ref": "#/definitions/WebSocketServerType"
         }
       ],
-      "description": "Deprecated: please use 'webSocketServer.type'/'--web-socket-server-type' option."
+      "description": "Deprecated: please use '--web-socket-server-type' option."
     },
     "WebSocketServerFunction": {
       "instanceof": "Function"
diff --git a/test/__snapshots__/validate-options.test.js.snap.webpack4 b/test/__snapshots__/validate-options.test.js.snap.webpack4
index aec94bace2..90222720fa 100644
--- a/test/__snapshots__/validate-options.test.js.snap.webpack4
+++ b/test/__snapshots__/validate-options.test.js.snap.webpack4
@@ -908,7 +908,7 @@ exports[`options validate should throw an error on the "webSocketServer" option
    Details:
     * options.webSocketServer should be one of these:
       false | \\"sockjs\\" | \\"ws\\"
-      -> Deprecated: please use 'webSocketServer.type'/'--web-socket-server-type' option.
+      -> Deprecated: please use '--web-socket-server-type' option.
       Details:
        * options.webSocketServer should be false.
        * options.webSocketServer should be one of these:
@@ -928,7 +928,7 @@ exports[`options validate should throw an error on the "webSocketServer" option
    Details:
     * options.webSocketServer should be one of these:
       false | \\"sockjs\\" | \\"ws\\"
-      -> Deprecated: please use 'webSocketServer.type'/'--web-socket-server-type' option.
+      -> Deprecated: please use '--web-socket-server-type' option.
       Details:
        * options.webSocketServer should be false.
        * options.webSocketServer should be one of these:
diff --git a/test/__snapshots__/validate-options.test.js.snap.webpack5 b/test/__snapshots__/validate-options.test.js.snap.webpack5
index aec94bace2..90222720fa 100644
--- a/test/__snapshots__/validate-options.test.js.snap.webpack5
+++ b/test/__snapshots__/validate-options.test.js.snap.webpack5
@@ -908,7 +908,7 @@ exports[`options validate should throw an error on the "webSocketServer" option
    Details:
     * options.webSocketServer should be one of these:
       false | \\"sockjs\\" | \\"ws\\"
-      -> Deprecated: please use 'webSocketServer.type'/'--web-socket-server-type' option.
+      -> Deprecated: please use '--web-socket-server-type' option.
       Details:
        * options.webSocketServer should be false.
        * options.webSocketServer should be one of these:
@@ -928,7 +928,7 @@ exports[`options validate should throw an error on the "webSocketServer" option
    Details:
     * options.webSocketServer should be one of these:
       false | \\"sockjs\\" | \\"ws\\"
-      -> Deprecated: please use 'webSocketServer.type'/'--web-socket-server-type' option.
+      -> Deprecated: please use '--web-socket-server-type' option.
       Details:
        * options.webSocketServer should be false.
        * options.webSocketServer should be one of these:
diff --git a/test/cli/__snapshots__/basic.test.js.snap.webpack4 b/test/cli/__snapshots__/basic.test.js.snap.webpack4
index 7e6703c814..e46e5f66f5 100644
--- a/test/cli/__snapshots__/basic.test.js.snap.webpack4
+++ b/test/cli/__snapshots__/basic.test.js.snap.webpack4
@@ -78,7 +78,7 @@ Options:
   --client-web-socket-url-protocol <value>  Tells clients connected to devServer to use the provided protocol.
   --client-web-socket-url-username <value>  Tells clients connected to devServer to use the provided username to authenticate.
   --client-web-socket-url-password <value>  Tells clients connected to devServer to use the provided password to authenticate.
-  --web-socket-server <value>               Deprecated: please use 'webSocketServer.type'/'--web-socket-server-type' option. Allows to set web socket server and options (by default 'ws').
+  --web-socket-server <value>               Deprecated: please use '--web-socket-server-type' option. Allows to set web socket server and options (by default 'ws').
   --no-web-socket-server                    Negative 'web-socket-server' option.
   --web-socket-server-type <value>          Allows to set web socket server and options (by default 'ws').
   --compress                                Enables gzip compression for everything served.
diff --git a/test/cli/__snapshots__/basic.test.js.snap.webpack5 b/test/cli/__snapshots__/basic.test.js.snap.webpack5
index 973c40fa6e..17de303235 100644
--- a/test/cli/__snapshots__/basic.test.js.snap.webpack5
+++ b/test/cli/__snapshots__/basic.test.js.snap.webpack5
@@ -147,7 +147,7 @@ Options:
   --static-public-path-reset                Clear all items provided in 'static.publicPath' configuration. The static files will be available in the browser under this public path.
   --watch-files <value...>                  Allows to configure list of globs/directories/files to watch for file changes.
   --watch-files-reset                       Clear all items provided in 'watchFiles' configuration. Allows to configure list of globs/directories/files to watch for file changes.
-  --web-socket-server <value>               Deprecated: please use 'webSocketServer.type'/'--web-socket-server-type' option. Allows to set web socket server and options (by default 'ws').
+  --web-socket-server <value>               Deprecated: please use '--web-socket-server-type' option. Allows to set web socket server and options (by default 'ws').
   --no-web-socket-server                    Negative 'web-socket-server' option.
   --web-socket-server-type <value>          Allows to set web socket server and options (by default 'ws').