diff --git a/src/canonmn_int.cpp b/src/canonmn_int.cpp
index 52883ce1..f8ac11f4 100644
--- a/src/canonmn_int.cpp
+++ b/src/canonmn_int.cpp
@@ -1155,6 +1155,7 @@ namespace Exiv2 {
    constexpr TagInfo CanonMakerNote::tagInfoHdr_[] = {
          {0x0001, "HDR", N_("HDR"), N_("HDR"), canonHdrId, makerTags, signedLong, -1, EXV_PRINT_TAG(canonHdr)},
          {0x0002, "HDREffect", N_("HDR Effect"), N_("HDR Effect"), canonHdrId, makerTags, signedLong, -1, EXV_PRINT_TAG(canonHdrEffect)},
+         (0xffff, "(UnknownHDRTag)", "(UnknownHDRTag)", N_("Unknown Canon HDR Tag"), canonHdrId, makerTags, signedLong, 1, printValue)
     };
 
 
diff --git a/src/tiffimage_int.cpp b/src/tiffimage_int.cpp
index 31c1aff1..4da7e812 100644
--- a/src/tiffimage_int.cpp
+++ b/src/tiffimage_int.cpp
@@ -154,11 +154,6 @@ namespace Exiv2 {
         { 0, ttSignedLong, 1 }
     };
 
-        //! Canon Hdr Info binary array - definition
-    extern const ArrayDef canonHdrDef[] = {
-        { 2, ttSignedLong, 3 } // Exif.CanonHdr
-    };
-
     //! Nikon Vibration Reduction binary array - configuration
     constexpr ArrayCfg nikonVrCfg = {
         nikonVrId,        // Group for the elements
@@ -1559,7 +1554,7 @@ namespace Exiv2 {
         //{    0x4020, canonId,          EXV_SIMPLE_BINARY_ARRAY(canonAmCfg)      },
         //{    0x4021, canonId,          EXV_SIMPLE_BINARY_ARRAY(canonMeCfg)      },
         //{    0x4024, canonId,          EXV_SIMPLE_BINARY_ARRAY(canonFilCfg)      },
-        // {    0x4025, canonId,          EXV_BINARY_ARRAY(canonHdrCfg, canonHdrDef)  },
+         {    0x4025, canonId,          EXV_SIMPLE_BINARY_ARRAY(canonHdrCfg)  },
         //{    0x4028, canonId,          EXV_SIMPLE_BINARY_ARRAY(canonAfCCfg)      },        
         { Tag::next, canonId,          ignoreTiffComponent                       },
         {  Tag::all, canonId,          newTiffEntry                              },