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-rw-r--r--src/lib/magick_image_proxy.cc2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/lib/magick_image_proxy.cc b/src/lib/magick_image_proxy.cc
index e4417f366..d4d7e8aa6 100644
--- a/src/lib/magick_image_proxy.cc
+++ b/src/lib/magick_image_proxy.cc
@@ -66,6 +66,8 @@ MagickImageProxy::MagickImageProxy (shared_ptr<cxml::Node>, shared_ptr<Socket> s
shared_ptr<Image>
MagickImageProxy::image (optional<dcp::NoteHandler>) const
{
+ boost::mutex::scoped_lock lm (_mutex);
+
if (_image) {
return _image;
}