diff --git a/packages/opencode/src/server/server.ts b/packages/opencode/src/server/server.ts
index 87f605b0..a4b2b170 100644
--- a/packages/opencode/src/server/server.ts
+++ b/packages/opencode/src/server/server.ts
@@ -1188,7 +1188,7 @@ export namespace Server {
           "query",
           z.object({
             query: z.string(),
-            dirs: z.union([z.literal("true"), z.literal("false")]).optional(),
+            dirs: z.enum(["true", "false"]).optional(),
           }),
         ),
         async (c) => {