diff --git a/libavcodec/dpxenc.c b/libavcodec/dpxenc.c
index 4de71cff1006b7b0af62a9aca822ed574ed6b75a..2b1ead391b73b681051606ab01678383a86c1844 100644
--- a/libavcodec/dpxenc.c
+++ b/libavcodec/dpxenc.c
@@ -144,6 +144,7 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
     buf[802] = 2; /* linear colorimetric */
     buf[803] = s->bits_per_component;
     write16(buf + 804, s->bits_per_component == 10 ? 1 : 0); /* packing method */
+    write32(buf + 808, HEADER_SIZE); /* data offset */
 
     /* Image source information header */
     write32(buf + 1628, avctx->sample_aspect_ratio.num);
diff --git a/tests/ref/lavf/dpx b/tests/ref/lavf/dpx
index a9f1169317ac892111d8263f3c051a75f3b11650..42c0a335fbb8290474c02059b00d89b5aee070f1 100644
--- a/tests/ref/lavf/dpx
+++ b/tests/ref/lavf/dpx
@@ -1,3 +1,3 @@
-808ea110635774252439722a48329d61 *./tests/data/images/dpx/02.dpx
+d2f0b4e854fda2d3b3bee84cef80593c *./tests/data/images/dpx/02.dpx
 ./tests/data/images/dpx/%02d.dpx CRC=0x28c7369b
 305792 ./tests/data/images/dpx/02.dpx