diff --git a/extensions/typescript/src/features/signatureHelpProvider.ts b/extensions/typescript/src/features/signatureHelpProvider.ts
index f43fe461de9..4fed688b945 100644
--- a/extensions/typescript/src/features/signatureHelpProvider.ts
+++ b/extensions/typescript/src/features/signatureHelpProvider.ts
@@ -64,6 +64,7 @@ export default class TypeScriptSignatureHelpProvider implements SignatureHelpPro
 					}
 				});
 				signature.label += Previewer.plain(item.suffixDisplayParts);
+				signature.documentation = Previewer.plain(item.documentation);
 				result.signatures.push(signature);
 			});