diff --git a/android-builder-docker/README.md b/android-builder-docker/README.md
index 9fb5006..a2cc42d 100644
--- a/android-builder-docker/README.md
+++ b/android-builder-docker/README.md
@@ -61,7 +61,7 @@ cd ~/redroid/out/target/product/redroid_x86_64
 
 sudo mount system.img system -o ro
 sudo mount vendor.img vendor -o ro
-sudo tar --xattrs -c vendor -C system --exclude="vendor" . | docker import -c 'ENTRYPOINT ["/init", "androidboot.hardware=redroid"]' - redroid
+sudo tar --xattrs -c vendor -C system --exclude="./vendor" . | docker import -c 'ENTRYPOINT ["/init", "androidboot.hardware=redroid"]' - redroid
 sudo umount system vendor
 
 # create rootfs only image for develop purpose