diff --git a/packages/opencode/src/lsp/server.ts b/packages/opencode/src/lsp/server.ts
index 0e2dba675e1..1dd4274fa43 100644
--- a/packages/opencode/src/lsp/server.ts
+++ b/packages/opencode/src/lsp/server.ts
@@ -1559,6 +1559,7 @@ export namespace LSPServer {
       return {
         process: spawn(dart, ["language-server", "--lsp"], {
           cwd: root,
+          shell: process.platform === "win32",
         }),
       }
     },