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-rw-r--r--src/lib/j2k_image_proxy.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/lib/j2k_image_proxy.cc b/src/lib/j2k_image_proxy.cc
index 00d3cf2ef..4eceafae3 100644
--- a/src/lib/j2k_image_proxy.cc
+++ b/src/lib/j2k_image_proxy.cc
@@ -142,7 +142,7 @@ J2KImageProxy::prepare (Image::Alignment alignment, optional<dcp::Size> target_s
try {
/* XXX: should check that potentially trashing _data here doesn't matter */
- auto decompressed = dcp::decompress_j2k (const_cast<uint8_t*>(_data->data()), _data->size(), reduce);
+ auto decompressed = dcp::decompress_j2k (_data, reduce);
_image = make_shared<Image>(_pixel_format, decompressed->size(), alignment);
int const shift = 16 - decompressed->precision (0);