--- old/src/hotspot/share/gc/g1/g1HeapSizingPolicy.cpp	2020-02-11 11:34:44.738096643 +0100
+++ new/src/hotspot/share/gc/g1/g1HeapSizingPolicy.cpp	2020-02-11 11:34:44.332084161 +0100
@@ -64,8 +64,8 @@
   // If the heap is at less than half its maximum size, scale the threshold down,
   // to a limit of 1. Thus the smaller the heap is, the more likely it is to expand,
   // though the scaling code will likely keep the increase small.
-  if (_g1h->capacity() <= _g1h->max_capacity() / 2) {
-    threshold *= (double)_g1h->capacity() / (double)(_g1h->max_capacity() / 2);
+  if (_g1h->capacity() <= _g1h->soft_max_capacity() / 2) {
+    threshold *= (double)_g1h->capacity() / (double)(_g1h->soft_max_capacity() / 2);
     threshold = MAX2(threshold, 1.0);
   }