diff --git a/poky/meta/classes/kernel-fitimage.bbclass b/poky/meta/classes/kernel-fitimage.bbclass
index f5082c9..b9d8270 100644
--- a/poky/meta/classes/kernel-fitimage.bbclass
+++ b/poky/meta/classes/kernel-fitimage.bbclass
@@ -535,13 +535,19 @@
 	# Step 2: Prepare a DTB image section
 	#
 
-	if [ -z "${EXTERNAL_KERNEL_DEVICETREE}" ] && [ -n "${KERNEL_DEVICETREE}" ]; then
+	if [ -n "${KERNEL_DEVICETREE}" ]; then
 		dtbcount=1
 		for DTB in ${KERNEL_DEVICETREE}; do
 			if echo ${DTB} | grep -q '/dts/'; then
 				bbwarn "${DTB} contains the full path to the the dts file, but only the dtb name should be used."
 				DTB=`basename ${DTB} | sed 's,\.dts$,.dtb,g'`
 			fi
+
+			# Skip ${DTB} if it's also provided in ${EXTERNAL_KERNEL_DEVICETREE}
+			if [ -n "${EXTERNAL_KERNEL_DEVICETREE}" ] && [ -s ${EXTERNAL_KERNEL_DEVICETREE}/${DTB} ]; then
+				continue
+			fi
+
 			DTB_PATH="arch/${ARCH}/boot/dts/${DTB}"
 			if [ ! -e "${DTB_PATH}" ]; then
 				DTB_PATH="arch/${ARCH}/boot/${DTB}"
@@ -769,4 +775,4 @@
         bb.build.deltask('do_assemble_fitimage', d)
         bb.build.deltask('generate_rsa_keys', d)
         bb.build.addtask('generate_rsa_keys', 'do_assemble_fitimage_initramfs', 'do_bundle_initramfs', d)
-}
\ No newline at end of file
+}