diff --git a/renderer/index.js b/renderer/index.js
index b2e4c18f..10b0bb0e 100644
--- a/renderer/index.js
+++ b/renderer/index.js
@@ -164,7 +164,7 @@ function cleanUpConfig () {
     }
 
     // Migration: add per-file selections
-    if (!ts.selections) {
+    if (!ts.selections && ts.files) {
       ts.selections = ts.files.map((x) => true)
     }
   })