diff --git a/configs/common/Caches.py b/configs/common/Caches.py
index acaa0024e..926a41d07 100644
--- a/configs/common/Caches.py
+++ b/configs/common/Caches.py
@@ -38,6 +38,7 @@
 #
 # Authors: Lisa Hsu
 
+from m5.defines import buildEnv
 from m5.objects import *
 
 # Base implementations of L1, L2, IO and TLB-walker caches. There are
diff --git a/src/sim/Root.py b/src/sim/Root.py
index 776222b9c..e754a764c 100644
--- a/src/sim/Root.py
+++ b/src/sim/Root.py
@@ -29,7 +29,6 @@
 # Authors: Nathan Binkert
 
 from m5.SimObject import SimObject
-from m5.defines import buildEnv
 from m5.params import *
 from m5.util import fatal
 
diff --git a/src/sim/System.py b/src/sim/System.py
index 0d0251646..8ebf7a024 100644
--- a/src/sim/System.py
+++ b/src/sim/System.py
@@ -29,7 +29,6 @@
 #          Rick Strong
 
 from m5.SimObject import SimObject
-from m5.defines import buildEnv
 from m5.params import *
 from m5.proxy import *