diff --git a/src/hotspot/share/gc/serial/serialFullGC.cpp b/src/hotspot/share/gc/serial/serialFullGC.cpp
index 271b4b4ebdb..76a335d209f 100644
--- a/src/hotspot/share/gc/serial/serialFullGC.cpp
+++ b/src/hotspot/share/gc/serial/serialFullGC.cpp
@@ -482,6 +482,8 @@ void SerialFullGC::phase1_mark(bool clear_all_softrefs) {
   ref_processor()->start_discovery(clear_all_softrefs);
 
   {
+    GCTraceTime(Debug, gc, phases) tm_m("Marking From Roots", gc_timer());
+
     // Start tracing from roots, there are 3 kinds of roots in full-gc.
     //
     // 1. CLD. This method internally takes care of whether class loading is