diff --git a/src/hotspot/share/gc/g1/g1IHOPControl.hpp b/src/hotspot/share/gc/g1/g1IHOPControl.hpp
index 06b2ab13266..2a315599fd4 100644
--- a/src/hotspot/share/gc/g1/g1IHOPControl.hpp
+++ b/src/hotspot/share/gc/g1/g1IHOPControl.hpp
@@ -55,6 +55,7 @@ protected:
 
   // The target maximum occupancy of the heap. The target occupancy is the number
   // of bytes when marking should be finished and reclaim started.
+  // It is only considered for starting the marking.
   // This is a function of current heap size and external SoftMaxHeapSize goal.
   size_t target_occupancy() const;