1 files changed, 1 insertions, 1 deletions

diff --git a/meta/classes/kernel-fitimage.bbclass b/meta/classes/kernel-fitimage.bbclass
index 809bd4d698..298eda2a23 100644
--- a/meta/classes/kernel-fitimage.bbclass
+++ b/meta/classes/kernel-fitimage.bbclass
@@ -250,7 +250,7 @@ do_assemble_fitimage() {
                 #
                 # Step 5: Sign the image and add public key to U-Boot dtb
                 #
-                if test -n "${UBOOT_SIGN_ENABLE}"; then
+                if [ "x${UBOOT_SIGN_ENABLE}" = "x1" ] ; then
                         uboot-mkimage \
                                 ${@'-D "${UBOOT_MKIMAGE_DTCOPTS}"' if len('${UBOOT_MKIMAGE_DTCOPTS}') else ''} \
                                 -F -k "${UBOOT_SIGN_KEYDIR}" \