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-rw-r--r--extensions/TypeSniffer/Extension.pm3
1 files changed, 2 insertions, 1 deletions
diff --git a/extensions/TypeSniffer/Extension.pm b/extensions/TypeSniffer/Extension.pm
index fcd4f7dd6..49488c9ad 100644
--- a/extensions/TypeSniffer/Extension.pm
+++ b/extensions/TypeSniffer/Extension.pm
@@ -39,7 +39,8 @@ sub attachment_process_data {
# If we have autodetected application/octet-stream from the Content-Type
# header, let's have a better go using a sniffer.
- if ($params->{'contenttypemethod'} eq 'autodetect' &&
+ if ($params->{'contenttypemethod'} &&
+ $params->{'contenttypemethod'} eq 'autodetect' &&
$attributes->{'mimetype'} eq 'application/octet-stream')
{
# data is either a filehandle, or the data itself