diff --git a/lib/util/cmcd_manager.js b/lib/util/cmcd_manager.js
index d8630eb621..c13a9bb292 100644
--- a/lib/util/cmcd_manager.js
+++ b/lib/util/cmcd_manager.js
@@ -531,6 +531,10 @@ shaka.util.CmcdManager = class {
       return uri;
     }
 
+    if (uri.includes('offline:')) {
+      return uri;
+    }
+
     const separator = uri.includes('?') ? '&' : '?';
     return `${uri}${separator}${query}`;
   }