diff --git a/meta-witherspoon/conf/machine/witherspoon.conf b/meta-witherspoon/conf/machine/witherspoon.conf
index 579b00d..3f7aedc 100644
--- a/meta-witherspoon/conf/machine/witherspoon.conf
+++ b/meta-witherspoon/conf/machine/witherspoon.conf
@@ -8,6 +8,9 @@
 
 PREFERRED_PROVIDER_virtual/p9-vcs-workaround = ''
 
+# A machine override for common machine configuration for all of IBM's
+# "Accelerated Computing" class of systems.
+MACHINEOVERRIDES =. "ibm-ac-server:"
 require conf/machine/include/ast2500.inc
 require conf/machine/include/obmc-bsp-common.inc
 require conf/machine/include/openpower.inc