diff --git a/src/commands/app/run.js b/src/commands/app/run.js
index 281b7218..d76e6438 100644
--- a/src/commands/app/run.js
+++ b/src/commands/app/run.js
@@ -98,7 +98,7 @@ class Run extends BaseCommand {
       }
       // if they now exist ... use them in the options
       if (await fs.exists(PRIVATE_KEY_PATH) && await fs.exists(PUB_CERT_PATH)) {
-        runOptions.https = {
+        runOptions.parcel.https = {
           cert: PUB_CERT_PATH, // Path to custom certificate
           key: PRIVATE_KEY_PATH // Path to custom key
         }