diff --git a/scripts/run-builder.sh b/scripts/run-builder.sh
index 6a0797f..7c56f5f 100755
--- a/scripts/run-builder.sh
+++ b/scripts/run-builder.sh
@@ -56,10 +56,16 @@ echo ""
 echo "=== downloading ISO ==="
 LOCAL_ISO_DIR="${REPO_ROOT}/iso/out"
 mkdir -p "${LOCAL_ISO_DIR}"
-rsync -az --progress \
-    -e "ssh -o StrictHostKeyChecking=no" \
-    "root@${BUILDER_HOST}:/root/bee/dist/*.iso" \
-    "${LOCAL_ISO_DIR}/"
+if command -v rsync >/dev/null 2>&1 && ssh -o StrictHostKeyChecking=no root@"${BUILDER_HOST}" command -v rsync >/dev/null 2>&1; then
+    rsync -az --progress \
+        -e "ssh -o StrictHostKeyChecking=no" \
+        "root@${BUILDER_HOST}:/root/bee/dist/*.iso" \
+        "${LOCAL_ISO_DIR}/"
+else
+    scp -o StrictHostKeyChecking=no \
+        "root@${BUILDER_HOST}:/root/bee/dist/*.iso" \
+        "${LOCAL_ISO_DIR}/"
+fi
 echo ""
 echo "=== build complete ==="
 echo "ISO saved to: ${LOCAL_ISO_DIR}/"