diff --git a/tests/lavf-regression.sh b/tests/lavf-regression.sh
index f3dc84d295..ed2a44e3f9 100755
--- a/tests/lavf-regression.sh
+++ b/tests/lavf-regression.sh
@@ -235,7 +235,7 @@ fi
 if [ -n "$do_yuv4mpeg" ] ; then
 file=${outfile}lavf.y4m
 do_avconv $file $DEC_OPTS -f image2 -vcodec pgmyuv -i $raw_src $ENC_OPTS -t 1 -qscale 10
-#do_avconv_crc $file -i $target_path/$file
+do_avconv_crc $file -i $target_path/$file
 fi
 
 if [ -n "$do_fits" ] ; then
diff --git a/tests/ref/lavf/yuv4mpeg b/tests/ref/lavf/yuv4mpeg
index 8c1566ea0d..367b37621d 100644
--- a/tests/ref/lavf/yuv4mpeg
+++ b/tests/ref/lavf/yuv4mpeg
@@ -1,2 +1,3 @@
 ec8178cb152f9cdbfd9cb724d977db2e *./tests/data/lavf/lavf.y4m
 3801808 ./tests/data/lavf/lavf.y4m
+./tests/data/lavf/lavf.y4m CRC=0x0a941f26