1 files changed, 3 insertions, 1 deletions
diff --git a/nixos/lib/test-driver/Logger.pm b/nixos/lib/test-driver/Logger.pm
index 6e62fdfd7708..3fe5ef67c144 100644
--- a/nixos/lib/test-driver/Logger.pm
+++ b/nixos/lib/test-driver/Logger.pm
@@ -3,6 +3,7 @@ package Logger;
 use strict;
 use Thread::Queue;
 use XML::Writer;
+use Encode qw(decode encode);
 
 sub new {
     my ($class) = @_;
@@ -56,7 +57,8 @@ sub nest {
 sub sanitise {
     my ($s) = @_;
     $s =~ s/[[:cntrl:]\xff]//g;
-    return $s;
+    $s = decode('UTF-8', $s, Encode::FB_DEFAULT);
+    return encode('UTF-8', $s, Encode::FB_CROAK);
 }
 
 sub log {