diff --git a/bean.js b/bean.js
index 78b74ae..e0350b9 100644
--- a/bean.js
+++ b/bean.js
@@ -91,7 +91,7 @@
         return {
             mouseenter: { base: 'mouseover', condition: check }
           , mouseleave: { base: 'mouseout', condition: check }
-          , mousewheel: { base: /Firefox/.test(navigator.userAgent) ? 'DOMMouseScroll' : 'mousewheel' }
+          , mousewheel: { base: !(typeof InstallTrigger == 'undefined') ? 'DOMMouseScroll' : 'mousewheel' }
         }
       }())
 
@@ -738,4 +738,4 @@
   setSelectorEngine()
 
   return bean
-});
\ No newline at end of file
+});