diff --git a/meta/classes/rootfs_rpm.bbclass b/meta/classes/rootfs_rpm.bbclass
index c86cd09..300dd5f 100644
--- a/meta/classes/rootfs_rpm.bbclass
+++ b/meta/classes/rootfs_rpm.bbclass
@@ -153,7 +153,7 @@ list_installed_packages() {
 
 	# print the info, need to different return counts
 	if [ "$1" = "arch" ] ; then
-		echo "$GET_LIST" | awk '{print $1, $2}'
+		echo "$GET_LIST" | awk '{gsub("_", "-", $2); print $1, $2}'
         elif [ "$1" = "file" ] ; then
 		echo "$GET_LIST" | awk '{print $1, $3}'
         else