diff --git a/meta-aspeed/conf/machine/include/aspeed.inc b/meta-aspeed/conf/machine/include/aspeed.inc
index 88290ff..36153cf 100644
--- a/meta-aspeed/conf/machine/include/aspeed.inc
+++ b/meta-aspeed/conf/machine/include/aspeed.inc
@@ -3,4 +3,4 @@
 PREFERRED_PROVIDER_u-boot ?= "u-boot-aspeed"
 PREFERRED_PROVIDER_u-boot-fw-utils ?= "u-boot-fw-utils-aspeed"
 
-MACHINEOVERRIDES .= ":aspeed"
+MACHINEOVERRIDES =. "aspeed:"