diff --git a/x-pack/plugins/code/public/components/admin_page/language_server_tab.tsx b/x-pack/plugins/code/public/components/admin_page/language_server_tab.tsx
index 836ecb21260e0..d1e6d259aa7ae 100644
--- a/x-pack/plugins/code/public/components/admin_page/language_server_tab.tsx
+++ b/x-pack/plugins/code/public/components/admin_page/language_server_tab.tsx
@@ -162,7 +162,7 @@ class AdminLanguageSever extends React.PureComponent<Props, State> {
 }
 
 const SupportedOS = [
-  { id: 'win', name: 'Windows' },
+  { id: 'windows', name: 'Windows' },
   { id: 'linux', name: 'Linux' },
   { id: 'darwin', name: 'macOS' },
 ];
diff --git a/x-pack/plugins/code/server/lsp/java_launcher.ts b/x-pack/plugins/code/server/lsp/java_launcher.ts
index 6b094451719df..8fb796be76551 100644
--- a/x-pack/plugins/code/server/lsp/java_launcher.ts
+++ b/x-pack/plugins/code/server/lsp/java_launcher.ts
@@ -123,6 +123,7 @@ export class JavaLauncher extends AbstractLauncher {
       '-Dosgi.bundles.defaultStartLevel=4',
       '-Declipse.product=org.elastic.jdt.ls.core.product',
       '-Dlog.level=ALL',
+      '-Dfile.encoding=utf8',
       '-noverify',
       '-Xmx4G',
       '-jar',