diff --git a/app/Env.scala b/app/Env.scala
index a15612b831..5aef82d4a8 100644
--- a/app/Env.scala
+++ b/app/Env.scala
@@ -94,7 +94,6 @@ final class Env(
 ) {
 
   val explorerEndpoint  = config.get[String]("explorer.endpoint")
-  val explorer3Endpoint = config.get[String]("explorer.endpoint3")
   val tablebaseEndpoint = config.get[String]("explorer.tablebase.endpoint")
 
   val appVersionDate    = config.getOptional[String]("app.version.date")
diff --git a/app/templating/AssetHelper.scala b/app/templating/AssetHelper.scala
index edbcea34b4..ec5b3637dc 100644
--- a/app/templating/AssetHelper.scala
+++ b/app/templating/AssetHelper.scala
@@ -84,8 +84,7 @@ trait AssetHelper { self: I18nHelper with SecurityHelper =>
     }
     ContentSecurityPolicy(
       defaultSrc = List("'self'", assets),
-      connectSrc =
-        "'self'" :: assets :: sockets ::: env.explorerEndpoint :: env.tablebaseEndpoint :: env.explorer3Endpoint :: Nil,
+      connectSrc = "'self'" :: assets :: sockets ::: env.explorerEndpoint :: env.tablebaseEndpoint :: Nil,
       styleSrc = List("'self'", "'unsafe-inline'", assets),
       frameSrc = List("'self'", assets, "https://www.youtube.com", "https://player.twitch.tv"),
       workerSrc = List("'self'", assets),
diff --git a/app/templating/Environment.scala b/app/templating/Environment.scala
index 4faf9dfbf3..1dec94f4ca 100644
--- a/app/templating/Environment.scala
+++ b/app/templating/Environment.scala
@@ -40,7 +40,6 @@ object Environment
   def apiVersion = lila.api.Mobile.Api.currentVersion
 
   def explorerEndpoint  = env.explorerEndpoint
-  def explorer3Endpoint = env.explorer3Endpoint
   def tablebaseEndpoint = env.tablebaseEndpoint
 
   def isChatPanicEnabled = env.chat.panic.enabled
diff --git a/app/views/board/bits.scala b/app/views/board/bits.scala
index cd009e4161..3a934bee1c 100644
--- a/app/views/board/bits.scala
+++ b/app/views/board/bits.scala
@@ -44,7 +44,6 @@ object bits {
 
   def explorerConfig(implicit ctx: Context) = Json.obj(
     "endpoint"          -> explorerEndpoint,
-    "endpoint3"         -> explorer3Endpoint,
     "tablebaseEndpoint" -> tablebaseEndpoint,
     "showRatings"       -> ctx.pref.showRatings
   )
diff --git a/conf/base.conf b/conf/base.conf
index 41c84d92dd..e60fdb785b 100644
--- a/conf/base.conf
+++ b/conf/base.conf
@@ -324,7 +324,6 @@ streamer {
 }
 explorer {
   endpoint = "https://explorer.lichess.ovh"
-  endpoint3 = "https://explorer.lichess.ovh"
   internal_endpoint = "http://explorer.lichess.ovh"
   tablebase = {
     endpoint = "https://tablebase.lichess.ovh"
diff --git a/ui/analyse/src/explorer/explorerCtrl.ts b/ui/analyse/src/explorer/explorerCtrl.ts
index 29fbf06747..a466518008 100644
--- a/ui/analyse/src/explorer/explorerCtrl.ts
+++ b/ui/analyse/src/explorer/explorerCtrl.ts
@@ -77,7 +77,6 @@ export default class ExplorerCtrl {
 
   private baseXhrOpening = () => ({
     endpoint: this.opts.endpoint,
-    endpoint3: this.opts.endpoint3,
     config: this.config.data,
   });
 
diff --git a/ui/analyse/src/explorer/explorerXhr.ts b/ui/analyse/src/explorer/explorerXhr.ts
index 49f5ce3574..b0eaf9c2f6 100644
--- a/ui/analyse/src/explorer/explorerXhr.ts
+++ b/ui/analyse/src/explorer/explorerXhr.ts
@@ -6,7 +6,6 @@ import { sync } from 'common/sync';
 
 interface OpeningXhrOpts {
   endpoint: string;
-  endpoint3: string;
   db: ExplorerDb;
   rootFen: Fen;
   play: string[];
@@ -21,8 +20,10 @@ export async function opening(
   processData: (data: ExplorerData) => void
 ): Promise<CancellableStream> {
   const conf = opts.config;
-  const endpoint = opts.db == 'player' ? opts.endpoint3 : opts.endpoint;
-  const url = new URL(opts.db === 'lichess' ? '/lichess' : opts.db == 'player' ? '/personal' : '/master', endpoint);
+  const url = new URL(
+    opts.db === 'lichess' ? '/lichess' : opts.db == 'player' ? '/personal' : '/master',
+    opts.endpoint
+  );
   const params = url.searchParams;
   params.set('fen', opts.rootFen);
   params.set('play', opts.play.join(','));
diff --git a/ui/analyse/src/explorer/interfaces.ts b/ui/analyse/src/explorer/interfaces.ts
index f91cdc6487..55b4a644d5 100644
--- a/ui/analyse/src/explorer/interfaces.ts
+++ b/ui/analyse/src/explorer/interfaces.ts
@@ -14,7 +14,6 @@ export interface PlayerOpts {
 
 export interface ExplorerOpts {
   endpoint: string;
-  endpoint3: string;
   tablebaseEndpoint: string;
   showRatings: boolean;
 }