diff --git a/qa/tasks/ceph_manager.py b/qa/tasks/ceph_manager.py
index 67b8663d41c..bbb9ada3eeb 100644
--- a/qa/tasks/ceph_manager.py
+++ b/qa/tasks/ceph_manager.py
@@ -537,6 +537,8 @@ class Thrasher:
         try:
             if random.random() >= .3:
                 pgs = self.ceph_manager.get_pg_stats()
+                if not pgs:
+                    return
                 pg = random.choice(pgs)
                 pgid = str(pg['pgid'])
                 poolid = int(pgid.split('.')[0])