diff --git a/vmtools.py b/vmtools.py
index cde2c50..61b92cd 100644
--- a/vmtools.py
+++ b/vmtools.py
@@ -92,7 +92,7 @@ def delete_vm(api, config, vm_name):
         done = False
         try:
             vms_service = api.system_service().vms_service()
-            vm_search_regexp = ("name=%s%s__*" % (vm_name, config.get_vm_middle()))
+            vm_search_regexp = ("name=%s%s_*" % (vm_name, config.get_vm_middle()))
             for vm in vms_service.list(search=vm_search_regexp):
                 logger.info("Delete cloned VM (%s) started ..." % vm.name)
                 if not config.get_dry_run():