diff --git a/repos/os/run/internet_checksum.run b/repos/os/run/internet_checksum.run
index 0d4be7cff8..f60fc51c1b 100644
--- a/repos/os/run/internet_checksum.run
+++ b/repos/os/run/internet_checksum.run
@@ -85,7 +85,7 @@ set tmp_file "$lx_fs_dir/tmp"
 exec $tshark -o ip.check_checksum:TRUE -o tcp.check_checksum:TRUE -o udp.check_checksum:TRUE -V -r $output_file | grep -e "Checksum Status:" -e "Header checksum status:" > $tmp_file
 set num_output_checksums [exec wc -l < $tmp_file]
 if {$num_checked_checksums != $num_output_checksums} {
-	puts "\nError: number of checksums in $output_file differs from number of checked checksums\n"
+	puts "\nError: number of checksums in $output_file ($num_output_checksums) differs from number of checked checksums ($num_checked_checksums)\n"
 	exit -1
 }
 grep_output {\[init\] child "test-internet_checksum" exited}