1 files changed, 2 insertions, 2 deletions
diff --git a/inspector.js b/inspector.js
index bf4bb6f..dac4b4c 100644
--- a/inspector.js
+++ b/inspector.js
@@ -28,8 +28,8 @@ let INFO =
 </plugin>;
 
 
-const inspectorID = "inspector@mozilla.org";
-if (AddonManager) {
+var inspectorID = "inspector@mozilla.org";
+if (window.AddonManager) {
   AddonManager.getAddonByID(inspectorID, function(ext){
     if (ext.isActive)
       init();