@@ -, +, @@ --- C4/Output.pm | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) --- a/C4/Output.pm +++ a/C4/Output.pm @@ -160,6 +160,7 @@ sub themelanguage { if $http_accept_language; # But, if there's a cookie set, obey it $lang = $query->cookie('KohaOpacLanguage') if (defined $query and $query->cookie('KohaOpacLanguage')); + $lang =~ s/[^a-zA-Z_-]*//g; # Fall back to English my @languages; if ($interface eq 'intranet') { --