diff --git a/bootstrap.d/13-kernel.sh b/bootstrap.d/13-kernel.sh
index 5e20ef1..6986685 100644
--- a/bootstrap.d/13-kernel.sh
+++ b/bootstrap.d/13-kernel.sh
@@ -501,7 +501,7 @@ if [ "$BUILD_KERNEL" = true ] ; then
 
   # Copy compiled dtb device tree files
   if [ -d "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/overlays" ] ; then
-    for dtb in "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/overlays/"*.dtb ; do
+    for dtb in "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/overlays/"*.dtbo ; do
       if [ -f "${dtb}" ] ; then
         install_readonly "${dtb}" "${BOOT_DIR}/overlays/"
       fi
diff --git a/rpi23-gen-image.sh b/rpi23-gen-image.sh
index f328772..247af3a 100755
--- a/rpi23-gen-image.sh
+++ b/rpi23-gen-image.sh
@@ -719,7 +719,7 @@ if [ "$ENABLE_QEMU" = true ] ; then
     # Setup overlays dtbs directory
     mkdir "${BASEDIR}/qemu/overlays"
 
-    for dtb in "${BOOT_DIR}/overlays/"*.dtb ; do
+    for dtb in "${BOOT_DIR}/overlays/"*.dtbo ; do
       if [ -f "${dtb}" ] ; then
         install_readonly "${dtb}" "${BASEDIR}/qemu/overlays/"
       fi