diff --git a/src/server/editorServices.ts b/src/server/editorServices.ts
index fe8c11d262e..bf08d893e38 100644
--- a/src/server/editorServices.ts
+++ b/src/server/editorServices.ts
@@ -312,6 +312,7 @@ namespace ts.server {
             const info = this.getScriptInfoForNormalizedPath(fileName);
             if (!info) {
                 this.logger.info(`Error: got watch notification for unknown file: ${fileName}`);
+                return;
             }
 
             if (!this.host.fileExists(fileName)) {