diff --git a/src/trace_processor/importers/common/track_tracker.cc b/src/trace_processor/importers/common/track_tracker.cc
index 6fffbdb..d4e357f 100644
--- a/src/trace_processor/importers/common/track_tracker.cc
+++ b/src/trace_processor/importers/common/track_tracker.cc
@@ -362,6 +362,8 @@
     }
 
     descendent_uuids->pop_back();
+    if (owned_descendent_uuids)
+      descendent_uuids = nullptr;
   }
 
   if (reservation.tid) {