diff --git a/bootstrap.d/13-kernel.sh b/bootstrap.d/13-kernel.sh
index ef6bb61..bc51208 100644
--- a/bootstrap.d/13-kernel.sh
+++ b/bootstrap.d/13-kernel.sh
@@ -564,7 +564,7 @@ if [ "$BUILD_KERNEL" = true ] ; then
   fi
 
 else # BUILD_KERNEL=false
-  if [ "$SET_ARCH" = 64 ] 
+  if [ "$SET_ARCH" = 64 ] ; then
     if [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] ; then
 	  # Use Sakakis modified kernel if ZSWAP is active
       if [ "$KERNEL_ZSWAP" = true ] || [ "$KERNEL_VIRT" = true ] || [ "$KERNEL_NF" = true ] || [ "$KERNEL_BPF" = true ] ; then
diff --git a/files/apt/sources.list b/files/apt/sources.list
index 07e52dc..ce2be5d 100644
--- a/files/apt/sources.list
+++ b/files/apt/sources.list
@@ -1,8 +1,2 @@
-deb http://ftp.debian.org/debian stretch main contrib
-#deb-src http://ftp.debian.org/debian stretch main contrib
-
-deb http://ftp.debian.org/debian/ stretch-updates main contrib
-#deb-src http://ftp.debian.org/debian/ stretch-updates main contrib
-
-deb http://security.debian.org/ stretch/updates main contrib
-#deb-src http://security.debian.org/ stretch/updates main contrib
+deb http://ftp.debian.org/debian bullseye main contrib
+#deb-src http://ftp.debian.org/debian bullseye main contrib
\ No newline at end of file
diff --git a/rpi23-gen-image.sh b/rpi23-gen-image.sh
index 9e84dae..282147a 100755
--- a/rpi23-gen-image.sh
+++ b/rpi23-gen-image.sh
@@ -43,7 +43,7 @@ set -x
 RPI_MODEL=${RPI_MODEL:=2}
 
 # Debian release
-RELEASE=${RELEASE:=buster}
+RELEASE=${RELEASE:=bullseye}
 
 # Kernel Branch
 KERNEL_BRANCH=${KERNEL_BRANCH:=""}