diff --git a/src/hotspot/share/gc/g1/g1RemSet.cpp b/src/hotspot/share/gc/g1/g1RemSet.cpp
index 2a7077d3724ff..09b5f4ee80e75 100644
--- a/src/hotspot/share/gc/g1/g1RemSet.cpp
+++ b/src/hotspot/share/gc/g1/g1RemSet.cpp
@@ -849,7 +849,7 @@ class G1ScanCollectionSetRegionClosure : public HeapRegionClosure {
       // Scan the code root list attached to the current region
       r->code_roots_do(&cl);
 
-      _code_roots_scanned = cl.count();
+      _code_roots_scanned += cl.count();
 
       event.commit(GCId::current(), _worker_id, G1GCPhaseTimes::phase_name(_code_roots_phase));
     }