diff --git a/gpr_sdk/private/gpr_read_image.h b/gpr_sdk/private/gpr_read_image.h
index 159310b..f7d3ce1 100644
--- a/gpr_sdk/private/gpr_read_image.h
+++ b/gpr_sdk/private/gpr_read_image.h
@@ -54,7 +54,12 @@ public:
                    uint32 plane,
                    uint32 planes,
                    uint32 tileByteCount,
+// DNG 1.7 detection
+#ifdef qDNGSupportJXL
+                   std::shared_ptr<dng_memory_block> &compressedBuffer,
+#else
                    AutoPtr<dng_memory_block> &compressedBuffer,
+#endif
                    AutoPtr<dng_memory_block> &uncompressedBuffer,
                    AutoPtr<dng_memory_block> &subTileBlockBuffer,
 				   bool usingMultipleThreads  );