--- old/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/utilities/HeapHprofBinWriter.java	2019-02-15 20:10:37.831531839 +0100
+++ new/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/utilities/HeapHprofBinWriter.java	2019-02-15 20:10:37.247531843 +0100
@@ -390,9 +390,6 @@
 
     public synchronized void write(String fileName) throws IOException {
         VM vm = VM.getVM();
-        if (vm.getUniverse().heap() instanceof ZCollectedHeap) {
-            throw new RuntimeException("This operation is not supported with ZGC.");
-        }
 
         // open file stream and create buffered data output stream
         fos = new FileOutputStream(fileName);