diff --git a/client/src/index.tsx b/client/src/index.tsx
index 9367f4c..c42b6dc 100644
--- a/client/src/index.tsx
+++ b/client/src/index.tsx
@@ -34,6 +34,11 @@ const router = createHashRouter([
     path: "/game/nng",
     loader: () => redirect("/g/hhu-adam/NNG4")
   },
+  {
+    // For backwards compatibility
+    path: "/g/hhu-adam/NNG4",
+    loader: () => redirect("/g/leanprover-community/NNG4")
+  },
   {
     path: "/g/:owner/:repo",
     element: <App />,
diff --git a/server/index.mjs b/server/index.mjs
index dd026d0..c3ea647 100644
--- a/server/index.mjs
+++ b/server/index.mjs
@@ -123,8 +123,8 @@ const urlRegEx = /^\/websocket\/g\/([\w.-]+)\/([\w.-]+)$/
 wss.addListener("connection", function(ws, req) {
     const reRes = urlRegEx.exec(req.url)
     if (!reRes) { console.error(`Connection refused because of invalid URL: ${req.url}`); return; }
-    const owner = reRes[1]
-    const repo = reRes[2]
+    const owner = reRes[1].toLowerCase()
+    const repo = reRes[2].toLowerCase()
 
     let ps
     if (!queue[tag(owner, repo)] || queue[tag(owner, repo)].length == 0) {