diff --git a/assets/checksums.txt b/assets/checksums.txt
index 15d3f6745..ea46069f5 100644
--- a/assets/checksums.txt
+++ b/assets/checksums.txt
@@ -5,7 +5,7 @@ f914118b301509f92d16ab099d4287ee assets/ublock/filters.txt
 146704ad1c0393e342afdb416762c183 assets/ublock/badware.txt
 5baa90e2da7cd6a73edff2010557ee57 assets/ublock/redirect.txt
 a2c0edc2da6a2ba591d83f9a105a8401 assets/ublock/experimental.txt
-e1d448e77cc9dd211396b60de9666a69 assets/ublock/resources.txt
+73eb60d28f8a7fe9a39607d3fd07933c assets/ublock/resources.txt
 b27de2300e02598f6a6ec4065d1d5a53 assets/ublock/filter-lists.json
 50573388b525ede1a920cd4b4ee7fbf0 assets/thirdparties/easylist-downloads.adblockplus.org/easyprivacy.txt
 61cc16cf02e034370f0f47bc17c46551 assets/thirdparties/easylist-downloads.adblockplus.org/easylist.txt
diff --git a/assets/ublock/resources.txt b/assets/ublock/resources.txt
index 0b3fa9a97..dc20c5b05 100644
--- a/assets/ublock/resources.txt
+++ b/assets/ublock/resources.txt
@@ -539,14 +539,17 @@ openload-defuser.js application/javascript
 			a(r, o);
 		};
 	};
-	Object.defineProperty(window, 'webpackJsonpdmp', {
-		get: function() {
-			return wjdmp;
-		},
-		set: function(a) {
-			wjdmp = makefn(a);
-		}
-	});
+	try {
+		Object.defineProperty(window, 'webpackJsonpdmp', {
+			get: function() {
+				return wjdmp;
+			},
+			set: function(a) {
+				wjdmp = makefn(a);
+			}
+		});
+	} catch(ex) {
+	}
 })();
 
 
diff --git a/platform/firefox/vapi-background.js b/platform/firefox/vapi-background.js
index 96a13a770..70795324a 100644
--- a/platform/firefox/vapi-background.js
+++ b/platform/firefox/vapi-background.js
@@ -2637,10 +2637,11 @@ vAPI.toolbarButton = {
         } catch (ex) {
         }
     }
-    if ( CustomizableUI !== null ) {
-        if ( Services.vc.compare(Services.appinfo.platformVersion, '36.0') >= 0 ) {
-            return;
-        }
+    if (
+        CustomizableUI !== null &&
+        Services.vc.compare(Services.appinfo.platformVersion, '36.0') >= 0
+    ) {
+        return;
     }
 
     tbb.codePath = 'legacy';