diff --git a/lsp-sample/server/src/server.ts b/lsp-sample/server/src/server.ts
index ae3dd30980..8a7880bcef 100644
--- a/lsp-sample/server/src/server.ts
+++ b/lsp-sample/server/src/server.ts
@@ -153,12 +153,6 @@ connection.languages.diagnostics.on(async (params) => {
 	}
 });
 
-// The content of a text document has changed. This event is emitted
-// when the text document first opened or when its content has changed.
-documents.onDidChangeContent(change => {
-	validateTextDocument(change.document);
-});
-
 async function validateTextDocument(textDocument: TextDocument): Promise<Diagnostic[]> {
 	// In this simple example we get the settings for every validate run.
 	const settings = await getDocumentSettings(textDocument.uri);