diff --git a/local-cli/server/util/launchEditor.js b/local-cli/server/util/launchEditor.js
index db23750a8b7dab..dbc309f37ab27f 100644
--- a/local-cli/server/util/launchEditor.js
+++ b/local-cli/server/util/launchEditor.js
@@ -109,7 +109,7 @@ function guessEditor() {
     return [process.env.EDITOR];
   }
 
-  return null;
+  return [null];
 }
 
 function printInstructions(title) {