diff --git a/src/hotspot/share/gc/g1/g1CollectedHeap.cpp b/src/hotspot/share/gc/g1/g1CollectedHeap.cpp
index 1ec7155b1c2..0e75a63eb17 100644
--- a/src/hotspot/share/gc/g1/g1CollectedHeap.cpp
+++ b/src/hotspot/share/gc/g1/g1CollectedHeap.cpp
@@ -2727,8 +2727,6 @@ void G1CollectedHeap::do_collection_pause_at_safepoint(size_t allocation_word_si
 
   _bytes_used_during_gc = 0;
 
-  _cm->fully_initialize();
-
   policy()->decide_on_concurrent_start_pause();
   // Record whether this pause may need to trigger a concurrent operation. Later,
   // when we signal the G1ConcurrentMarkThread, the collector state has already
diff --git a/src/hotspot/share/gc/g1/g1YoungCollector.cpp b/src/hotspot/share/gc/g1/g1YoungCollector.cpp
index d4c380cb6a9..48c8fd85abc 100644
--- a/src/hotspot/share/gc/g1/g1YoungCollector.cpp
+++ b/src/hotspot/share/gc/g1/g1YoungCollector.cpp
@@ -1125,7 +1125,7 @@ G1YoungCollector::G1YoungCollector(GCCause::Cause gc_cause,
 }
 
 void G1YoungCollector::collect() {
-//  _g1h->_cm->fully_initialize();
+  _g1h->_cm->fully_initialize();
   // Do timing/tracing/statistics/pre- and post-logging/verification work not
   // directly related to the collection. They should not be accounted for in
   // collection work timing.