diff --git a/web/app/assets/javascripts/wizard/gear_test.js b/web/app/assets/javascripts/wizard/gear_test.js
index bdc80fdd5..3104d3172 100644
--- a/web/app/assets/javascripts/wizard/gear_test.js
+++ b/web/app/assets/javascripts/wizard/gear_test.js
@@ -53,7 +53,7 @@
 
 
     function isWdm() {
-      return selectedDeviceInfo.input.info.type == 'Win32_wdm' || selectedDeviceInfo.output.info.type == 'Win32_wdm'
+      return selectedDeviceInfo && (selectedDeviceInfo.input.info.type == 'Win32_wdm' || selectedDeviceInfo.output.info.type == 'Win32_wdm')
     }
 
     function isGoodFtue() {