diff --git a/tools/bits-info.sh b/tools/bits-info.sh
index 57fd1a0e..9b708bdf 100755
--- a/tools/bits-info.sh
+++ b/tools/bits-info.sh
@@ -157,7 +157,7 @@ check_bitness_of_file()
   fi
 
 echo '---'
-dump_hex "${1:?}" '4' '0'
+dump_hex 1>&2 "${1:?}" '4' '0'
 echo '---'
 
   printf '%s\n' 'unknown-file-type'