--- a/src/hotspot/share/gc/parallel/asPSYoungGen.cpp	Fri Nov 22 10:03:38 2019 +0100
+++ b/src/hotspot/share/gc/parallel/asPSYoungGen.cpp	Fri Nov 22 10:03:38 2019 +0100
@@ -167,8 +167,7 @@
   // Adjust new generation size
   const size_t eden_plus_survivors =
     align_up(eden_size + 2 * survivor_size, alignment);
-  size_t desired_size = MAX2(MIN2(eden_plus_survivors, gen_size_limit()),
-                             min_gen_size());
+  size_t desired_size = clamp(eden_plus_survivors, min_gen_size(), gen_size_limit());
   assert(desired_size <= gen_size_limit(), "just checking");
 
   if (desired_size > orig_size) {