.mx.jvmci/mx_jvmci.py

*** 184,193 ****
--- 184,194 ----
          srcCerts = join(mx.get_jdk(tag='default').home, 'lib', 'security', 'cacerts')
          if not exists(srcCerts):
              # Might be building with JDK8 which has cacerts under jre/
              srcCerts = join(mx.get_jdk(tag='default').home, 'jre', 'lib', 'security', 'cacerts')
          dstCerts = join(jdkImageDir, 'lib', 'security', 'cacerts')
+         if srcCerts != dstCerts:
              shutil.copyfile(srcCerts, dstCerts)
  
          _create_jdk_bundle(jdkBuildDir, _vm.debugLevel, jdkImageDir)
  
  def _get_jdk_bundle_arches():