--- old/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/JVMCIVersionCheck.java	2017-03-20 17:38:38.000000000 -0700
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/JVMCIVersionCheck.java	2017-03-20 17:38:37.000000000 -0700
@@ -23,6 +23,7 @@
 package org.graalvm.compiler.hotspot;
 
 import java.util.Formatter;
+import java.util.Objects;
 
 /**
  * Mechanism for checking that the current Java runtime environment supports the minimum JVMCI API
@@ -37,10 +38,11 @@
 class JVMCIVersionCheck {
 
     private static final int JVMCI8_MIN_MAJOR_VERSION = 0;
-    private static final int JVMCI8_MIN_MINOR_VERSION = 23;
+    private static final int JVMCI8_MIN_MINOR_VERSION = 24;
 
-    // Will be updated once an ea build with the required JVMCI API is available.
-    private static final int JVMCI9_MIN_EA_BUILD = 143;
+    // MAX_VALUE indicates that no current EA version is compatible with Graal.
+    // Note: Keep README.md in sync with the EA version support checked here.
+    private static final int JVMCI9_MIN_EA_BUILD = 161;
 
     private static void failVersionCheck(boolean exit, String reason, Object... args) {
         Formatter errorMessage = new Formatter().format(reason, args);
@@ -116,7 +118,11 @@
                 if (build >= JVMCI9_MIN_EA_BUILD) {
                     return;
                 }
-                failVersionCheck(exitOnFailure, "The VM is an insufficiently recent EA JDK9 build for Graal: %d < %d.%n", build, JVMCI9_MIN_EA_BUILD);
+                if (Objects.equals(JVMCI9_MIN_EA_BUILD, Integer.MAX_VALUE)) {
+                    failVersionCheck(exitOnFailure, "This version of Graal is not compatible with any JDK 9 Early Access build.%n");
+                } else {
+                    failVersionCheck(exitOnFailure, "The VM is an insufficiently recent EA JDK9 build for Graal: %d < %d.%n", build, JVMCI9_MIN_EA_BUILD);
+                }
                 return;
             }
             failVersionCheck(exitOnFailure, "The VM does not support the minimum JVMCI API version required by Graal.%n" +