diff --git a/advagg.module b/advagg.module
index 3561744..fae56ce 100644
--- a/advagg.module
+++ b/advagg.module
@@ -306,13 +306,10 @@ function advagg_cron() {
 
   // Prune old bundles
   $bundles_removed += db_result(db_query("
-    SELECT COUNT(*)
-    FROM (
-      SELECT *
-      FROM {advagg_bundles}
-      WHERE timestamp < %d
-      GROUP BY bundle_md5
-    ) AS advagg_count", $max_bundle_time));
+    SELECT COUNT(*) AS advagg_count
+    FROM {advagg_bundles}
+    WHERE timestamp < %d
+    GROUP BY bundle_md5", $max_bundle_time));
   $results = db_query("DELETE FROM {advagg_bundles} WHERE timestamp < %d", $max_bundle_time);
 
   // Report to watchdog if anything was done.