diff --git a/src/js/cosmetic-filtering.js b/src/js/cosmetic-filtering.js
index 62d7fd4b5..b7d1e6d86 100644
--- a/src/js/cosmetic-filtering.js
+++ b/src/js/cosmetic-filtering.js
@@ -961,9 +961,8 @@ FilterContainer.prototype.dump = function() {
         lowlyGenerics.push(...selectors.split(',\n'));
     }
     lowlyGenerics.sort();
-    const highlyGenerics = Array.from(this.highlyGeneric.simple.dict);
-    highlyGenerics.push(Array.from(this.highlyGeneric.complex.dict));
-    highlyGenerics.sort();
+    const highlyGenerics = Array.from(this.highlyGeneric.simple.dict).sort();
+    highlyGenerics.push(...Array.from(this.highlyGeneric.complex.dict).sort());
     return [
         'Cosmetic Filtering Engine internals:',
         `specific: ${this.specificFilters.size}`,
diff --git a/src/js/messaging.js b/src/js/messaging.js
index 1b394d088..3ad22bbcf 100644
--- a/src/js/messaging.js
+++ b/src/js/messaging.js
@@ -240,11 +240,14 @@ const onMessage = function(request, sender, callback) {
             );
             out.push(`+ Unsupported filters (${bad.length}): ${JSON.stringify(bad, replacer, 2)}`);
             out.push(`+ generichide exclusions (${network.generichideExclusions.length}): ${JSON.stringify(network.generichideExclusions, replacer, 2)}`);
-            out.push(`+ Cosmetic filters: ${result.specificCosmetic.size}`);
-            for ( const details of result.specificCosmetic ) {
-                out.push(`    ${JSON.stringify(details)}`);
+            if ( result.specificCosmetic ) {
+                out.push(`+ Cosmetic filters: ${result.specificCosmetic.size}`);
+                for ( const details of result.specificCosmetic ) {
+                    out.push(`    ${JSON.stringify(details)}`);
+                }
+            } else {
+                out.push('  Cosmetic filters: 0');
             }
-
             callback(out.join('\n'));
         });
         return;