diff --git a/app/models/miq_worker.rb b/app/models/miq_worker.rb
index e0ccb641d6e5..77b5982c67bf 100644
--- a/app/models/miq_worker.rb
+++ b/app/models/miq_worker.rb
@@ -32,7 +32,7 @@ class MiqWorker < ApplicationRecord
   STATUSES_STOPPED  = [STATUS_STOPPED, STATUS_KILLED, STATUS_ABORTED]
   STATUSES_CURRENT_OR_STARTING = STATUSES_CURRENT + STATUSES_STARTING
   STATUSES_ALIVE    = STATUSES_CURRENT_OR_STARTING + [STATUS_STOPPING]
-  PROCESS_INFO_FIELDS = %i(priority memory_usage percent_memory percent_cpu memory_size cpu_time proportional_set_size)
+  PROCESS_INFO_FIELDS = %i(priority memory_usage percent_memory percent_cpu memory_size cpu_time proportional_set_size unique_set_size)
 
   PROCESS_TITLE_PREFIX = "MIQ:".freeze