diff --git a/app/javascript/dashboard/store/modules/inboxes.js b/app/javascript/dashboard/store/modules/inboxes.js
index 83102ba97..e266887f7 100644
--- a/app/javascript/dashboard/store/modules/inboxes.js
+++ b/app/javascript/dashboard/store/modules/inboxes.js
@@ -12,13 +12,16 @@ const buildInboxData = inboxParams => {
   Object.keys(inboxProperties).forEach(key => {
     formData.append(key, inboxProperties[key]);
   });
-  const { selectedFeatureFlags = [], ...channelParams } = channel;
-  if (selectedFeatureFlags.length) {
-    selectedFeatureFlags.forEach(featureFlag => {
-      formData.append(`channel[selected_feature_flags][]`, featureFlag);
-    });
-  } else {
-    formData.append('channel[selected_feature_flags][]', '');
+  const { selectedFeatureFlags, ...channelParams } = channel;
+  // selectedFeatureFlags needs to be empty when creating a website channel
+  if (selectedFeatureFlags) {
+    if (selectedFeatureFlags.length) {
+      selectedFeatureFlags.forEach(featureFlag => {
+        formData.append(`channel[selected_feature_flags][]`, featureFlag);
+      });
+    } else {
+      formData.append('channel[selected_feature_flags][]', '');
+    }
   }
   Object.keys(channelParams).forEach(key => {
     formData.append(`channel[${key}]`, channel[key]);