--- a/browser/modules/BrowserUITelemetry.jsm
+++ b/browser/modules/BrowserUITelemetry.jsm
@@ -708,28 +708,34 @@ this.BrowserUITelemetry = {
   },
 
   _bucket: BUCKET_DEFAULT,
   _bucketTimer: null,
 
   /**
    * Default bucket name, when no other bucket is active.
    */
-  get BUCKET_DEFAULT() BUCKET_DEFAULT,
+  get BUCKET_DEFAULT() {
+    return BUCKET_DEFAULT;
+  },
 
   /**
    * Bucket prefix, for named buckets.
    */
-  get BUCKET_PREFIX() BUCKET_PREFIX,
+  get BUCKET_PREFIX() {
+    return BUCKET_PREFIX;
+  },
 
   /**
    * Standard separator to use between different parts of a bucket name, such
    * as primary name and the time step string.
    */
-  get BUCKET_SEPARATOR() BUCKET_SEPARATOR,
+  get BUCKET_SEPARATOR() {
+    return BUCKET_SEPARATOR;
+  },
 
   get currentBucket() {
     return this._bucket;
   },
 
   /**
    * Sets a named bucket for all countable events and select durections to be
    * put into.