diff --git a/README.md b/README.md
index cbe0a27..4481913 100644
--- a/README.md
+++ b/README.md
@@ -78,7 +78,7 @@ The following environment variables are supported:
     that the network block device is not disconnected correctly after the Docker process has
     ended abnormally. In that case see [Disconnect an image if something went wrong](#Disconnect-an-image-if-something-went-wrong)
 
-* `RELEASE` (Default: bullseye)
+* `RELEASE` (Default: bookworm)
 
    The release version to build images against. Valid values are any supported
    Debian release. However, since different releases will have different sets of
diff --git a/build-docker.sh b/build-docker.sh
index 8d71b0f..d2115c4 100755
--- a/build-docker.sh
+++ b/build-docker.sh
@@ -87,7 +87,7 @@ ${DOCKER} build --build-arg BASE_IMAGE=debian:bullseye -t pi-gen "${DIR}"
 if [ "${CONTAINER_EXISTS}" != "" ]; then
   DOCKER_CMDLINE_NAME="${CONTAINER_NAME}_cont"
   DOCKER_CMDLINE_PRE="--rm"
-  DOCKER_CMDLINE_POST="--volumes-from=\"${CONTAINER_NAME}\""
+  DOCKER_CMDLINE_POST="--volumes-from=${CONTAINER_NAME}"
 else
   DOCKER_CMDLINE_NAME="${CONTAINER_NAME}"
   DOCKER_CMDLINE_PRE=""