diff --git a/libavcodec/pngenc.c b/libavcodec/pngenc.c
index 89c3d5b83e..7ae16fa2c5 100644
--- a/libavcodec/pngenc.c
+++ b/libavcodec/pngenc.c
@@ -450,17 +450,17 @@ static int encode_headers(AVCodecContext *avctx, const AVFrame *pict)
 
     side_data = av_frame_get_side_data(pict, AV_FRAME_DATA_MASTERING_DISPLAY_METADATA);
     if (side_data) {
-        AVMasteringDisplayMetadata *mdvc = (AVMasteringDisplayMetadata *) side_data->data;
-        if (mdvc->has_luminance && mdvc->has_primaries) {
+        AVMasteringDisplayMetadata *mdcv = (AVMasteringDisplayMetadata *) side_data->data;
+        if (mdcv->has_luminance && mdcv->has_primaries) {
             for (int i = 0; i < 3; i++) {
-                AV_WB16(s->buf + 2*i, PNG_Q2D(mdvc->display_primaries[i][0], 50000));
-                AV_WB16(s->buf + 2*i + 2, PNG_Q2D(mdvc->display_primaries[i][1], 50000));
+                AV_WB16(s->buf + 2*i, PNG_Q2D(mdcv->display_primaries[i][0], 50000));
+                AV_WB16(s->buf + 2*i + 2, PNG_Q2D(mdcv->display_primaries[i][1], 50000));
             }
-            AV_WB16(s->buf + 12, PNG_Q2D(mdvc->white_point[0], 50000));
-            AV_WB16(s->buf + 14, PNG_Q2D(mdvc->white_point[1], 50000));
-            AV_WB32(s->buf + 16, PNG_Q2D(mdvc->max_luminance, 10000));
-            AV_WB32(s->buf + 20, PNG_Q2D(mdvc->min_luminance, 10000));
-            png_write_chunk(&s->bytestream, MKTAG('m', 'D', 'V', 'c'), s->buf, 24);
+            AV_WB16(s->buf + 12, PNG_Q2D(mdcv->white_point[0], 50000));
+            AV_WB16(s->buf + 14, PNG_Q2D(mdcv->white_point[1], 50000));
+            AV_WB32(s->buf + 16, PNG_Q2D(mdcv->max_luminance, 10000));
+            AV_WB32(s->buf + 20, PNG_Q2D(mdcv->min_luminance, 10000));
+            png_write_chunk(&s->bytestream, MKTAG('m', 'D', 'C', 'v'), s->buf, 24);
         }
     }