diff --git a/scripts/deploy_image.sh b/scripts/deploy_image.sh
index 7949597..d430157 100644
--- a/scripts/deploy_image.sh
+++ b/scripts/deploy_image.sh
@@ -4,7 +4,7 @@ set -euo pipefail
 ENV=${1:-test}
 IMAGE=${2:-marketingsystemdatatool_msdt:latest}
 CMD=${3:-up}
-PLATFORM=${PLATFORM:-linux/amd64}
+PLATFORM=${PLATFORM:-}
 
 ROOT_DIR=$(cd "$(dirname "$0")/.." && pwd)
 
@@ -17,8 +17,9 @@ fi
 case "$CMD" in
   up)
     docker rm -f msdt >/dev/null 2>&1 || true
-    docker run -d --name msdt \
-      --platform "$PLATFORM" \
+    PLATFORM_FLAG=""
+    if [ -n "$PLATFORM" ]; then PLATFORM_FLAG="--platform $PLATFORM"; fi
+    docker run -d --name msdt $PLATFORM_FLAG \
       -p 8077:8077 \
       -e APP_ENV="$ENV" \
       -e MARKETING_DB_HOST="${MARKETING_DB_HOST:-}" \
@@ -41,5 +42,6 @@ case "$CMD" in
     docker logs -f msdt ;;
   *)
     echo "usage: deploy_image.sh <env> <image> [up|down|restart|logs]" >&2
+    echo "env overrides: set PLATFORM=linux/amd64 or PLATFORM=linux/arm64 if needed" >&2
     exit 1 ;;
 esac