diff --git a/meta-ampere/meta-jade/conf/machine/mtjade.conf b/meta-ampere/meta-jade/conf/machine/mtjade.conf
index 43a1059..67e852b 100644
--- a/meta-ampere/meta-jade/conf/machine/mtjade.conf
+++ b/meta-ampere/meta-jade/conf/machine/mtjade.conf
@@ -24,7 +24,7 @@
 
 VOLATILE_LOG_DIR = "no"
 
-OBMC_IMAGE_EXTRA_INSTALL_append = "\
+OBMC_IMAGE_EXTRA_INSTALL:append = "\
                                    mtjade-utils \
                                    ampere-usbnet \
                                    ampere-flash-utils \