diff --git a/scripts/dtc/dtx_diff b/scripts/dtc/dtx_diff
index ec47f95..fb86f38 100755
--- a/scripts/dtc/dtx_diff
+++ b/scripts/dtc/dtx_diff
@@ -338,7 +338,7 @@
 
 if (( ${cmd_diff} )) ; then
 
-	diff ${diff_flags} \
+	diff ${diff_flags} --label "${dtx_file_1}" --label "${dtx_file_2}" \
 		<(compile_to_dts "${dtx_file_1}") \
 		<(compile_to_dts "${dtx_file_2}")