diff --git a/src/flag-definitions.h b/src/flag-definitions.h
index 5ee4168250..caa99e74b0 100644
--- a/src/flag-definitions.h
+++ b/src/flag-definitions.h
@@ -689,7 +689,7 @@ DEFINE_INT(max_incremental_marking_finalization_rounds, 3,
            "at most try this many times to finalize incremental marking")
 DEFINE_BOOL(concurrent_sweeping, true, "use concurrent sweeping")
 DEFINE_BOOL(parallel_compaction, true, "use parallel compaction")
-DEFINE_BOOL(parallel_pointer_update, true,
+DEFINE_BOOL(parallel_pointer_update, false,
             "use parallel pointer update during compaction")
 DEFINE_BOOL(trace_incremental_marking, false,
             "trace progress of the incremental marking")