diff --git a/src/entry.sh b/src/entry.sh
index 27d7066..82e3bfb 100755
--- a/src/entry.sh
+++ b/src/entry.sh
@@ -3,6 +3,7 @@ set -Eeuo pipefail
 
 : "${APP:="QEMU"}"
 : "${MACHINE:="virt"}"
+: "${PLATFORM:="arm64"}"
 : "${SUPPORT:="https://github.com/qemus/qemu-arm"}"
 
 cd /run