diff --git a/apps/web/lib/buildLegacyCtx.tsx b/apps/web/lib/buildLegacyCtx.tsx
index 4ec6d898b17bca..22817f0cf645da 100644
--- a/apps/web/lib/buildLegacyCtx.tsx
+++ b/apps/web/lib/buildLegacyCtx.tsx
@@ -55,6 +55,7 @@ export const buildLegacyCtx = (
     query: { ...searchParams, ...params },
     // decoding is required to be backward compatible with Pages Router
     // because Next.js App Router does not auto-decode query params while Pages Router does
+    // e.g., params: { name: "John%20Doe" } => params: { name: "John Doe" }
     params: decodeParams(params),
     req: { headers: buildLegacyHeaders(headers), cookies: buildLegacyCookies(cookies) },
     res: new Proxy(Object.create(null), {