diff --git a/src/server/typingsInstaller/typingsInstaller.ts b/src/server/typingsInstaller/typingsInstaller.ts
index df2b6916e4bc0..f005ec7de8fc4 100644
--- a/src/server/typingsInstaller/typingsInstaller.ts
+++ b/src/server/typingsInstaller/typingsInstaller.ts
@@ -149,7 +149,7 @@ namespace ts.server.typingsInstaller {
             }
             const discoverTypingsResult = JsTyping.discoverTypings(
                 this.installTypingHost,
-                this.log.isEnabled() ? this.log.writeLine : undefined,
+                this.log.isEnabled() ? (s => this.log.writeLine(s)) : undefined,
                 req.fileNames,
                 req.projectRootPath,
                 this.safeList,