diff --git a/app/instance-initializers/ember-cli-tailwind.js b/app/instance-initializers/ember-cli-tailwind.js
index 9723d25..42a5d08 100644
--- a/app/instance-initializers/ember-cli-tailwind.js
+++ b/app/instance-initializers/ember-cli-tailwind.js
@@ -13,6 +13,11 @@ const TailwindApplicationRoute = Route.extend({
 });
 
 export function initialize(appInstance) {
+  if (!appInstance.lookup) {
+    // not compatible with ember 1.13
+    return;
+  } 
+
   let fastboot = appInstance.lookup('service:fastboot');
   let fastbootIsInstalled = fastboot;
   let fastbootIsNotInstalled = !fastboot;