diff --git a/src/js/redirect-engine.js b/src/js/redirect-engine.js
index e30a802e2..062317f59 100644
--- a/src/js/redirect-engine.js
+++ b/src/js/redirect-engine.js
@@ -144,6 +144,8 @@ const redirectableResources = new Map([
         alias: [ 'noopmp3-0.1s', 'abp-resource:blank-mp3' ],
         data: 'blob',
     } ],
+    [ 'noop-0.5s.mp3', {
+    } ],
     [ 'noop-1s.mp4', {
         alias: 'noopmp4-1s',
         data: 'blob',
diff --git a/src/web_accessible_resources/noop-0.5s.mp3 b/src/web_accessible_resources/noop-0.5s.mp3
new file mode 100644
index 000000000..b82866bbf
Binary files /dev/null and b/src/web_accessible_resources/noop-0.5s.mp3 differ