diff --git a/configs/common/CpuConfig.py b/configs/common/CpuConfig.py
index 28267c7dd9..eee6a77d3e 100644
--- a/configs/common/CpuConfig.py
+++ b/configs/common/CpuConfig.py
@@ -35,6 +35,7 @@
 #
 # Authors: Andreas Sandberg
 
+from m5 import fatal
 import m5.objects
 import inspect
 import sys