diff --git a/libavcodec/pngdec.c b/libavcodec/pngdec.c
index 1f8a77b37b..72d75fba80 100644
--- a/libavcodec/pngdec.c
+++ b/libavcodec/pngdec.c
@@ -633,6 +633,8 @@ static int decode_idat_chunk(AVCodecContext *avctx, PNGDecContext *s,
             return AVERROR_INVALIDDATA;
         }
 
+        avctx->color_range = AVCOL_RANGE_JPEG;
+
         if ((ret = ff_thread_get_buffer(avctx, &s->picture, AV_GET_BUFFER_FLAG_REF)) < 0)
             return ret;
         ff_thread_finish_setup(avctx);
diff --git a/tests/ref/fate/png-ya16 b/tests/ref/fate/png-ya16
index 07906c4a70..dffdaf7038 100644
--- a/tests/ref/fate/png-ya16
+++ b/tests/ref/fate/png-ya16
@@ -1,2 +1,2 @@
 #tb 0: 1/25
-0,          0,          0,        1,    49152, 0x93ce1cd5
+0,          0,          0,        1,    49152, 0x0801ce78
diff --git a/tests/ref/fate/png-ya8 b/tests/ref/fate/png-ya8
index 3a5c99d9eb..1318af80c6 100644
--- a/tests/ref/fate/png-ya8
+++ b/tests/ref/fate/png-ya8
@@ -1,2 +1,2 @@
 #tb 0: 1/25
-0,          0,          0,        1,    49152, 0xed73bf03
+0,          0,          0,        1,    49152, 0x5a1481f8