diff --git a/src/entry.sh b/src/entry.sh
index 69a83c4..27d7066 100755
--- a/src/entry.sh
+++ b/src/entry.sh
@@ -2,6 +2,7 @@
 set -Eeuo pipefail
 
 : "${APP:="QEMU"}"
+: "${MACHINE:="virt"}"
 : "${SUPPORT:="https://github.com/qemus/qemu-arm"}"
 
 cd /run