diff --git a/tests/gem5/configs/base_config.py b/tests/gem5/configs/base_config.py
index fbedbaf68c..5623db8bee 100644
--- a/tests/gem5/configs/base_config.py
+++ b/tests/gem5/configs/base_config.py
@@ -133,7 +133,7 @@ class BaseSystem(object):
         Arguments:
           system -- System to work on.
         """
-        system.vm = KvmVM()
+        system.kvm_vm = KvmVM()
 
     def init_system(self, system):
         """Initialize a system.