diff --git a/src/server/editorServices.ts b/src/server/editorServices.ts
index 53cab79f9af..3cfccaec423 100644
--- a/src/server/editorServices.ts
+++ b/src/server/editorServices.ts
@@ -1360,7 +1360,7 @@ module ts.server {
             }
         }
 
-        static fromString(host: System, script: string) {
+        static fromString(host: ServerHost, script: string) {
             var svc = new ScriptVersionCache();
             var snap = new LineIndexSnapshot(0, svc);
             svc.versions[svc.currentVersion] = snap;
diff --git a/src/server/tsconfig.json b/src/server/tsconfig.json
index bdc0a36cb86..2c8538c61e3 100644
--- a/src/server/tsconfig.json
+++ b/src/server/tsconfig.json
@@ -12,7 +12,6 @@
         "editorServices.ts",
         "protocol.d.ts",
         "server.ts",
-        "nodeimpl.ts",
         "session.ts"
     ]
 }