diff --git a/tests/lavf-regression.sh b/tests/lavf-regression.sh
index f5c5bf623e..8936357923 100755
--- a/tests/lavf-regression.sh
+++ b/tests/lavf-regression.sh
@@ -223,6 +223,10 @@ if [ -n "$do_xwd" ] ; then
 do_image_formats xwd
 fi
 
+if [ -n "$do_sun" ] ; then
+do_image_formats sun
+fi
+
 # audio only
 
 if [ -n "$do_wav" ] ; then
diff --git a/tests/ref/lavf/sun b/tests/ref/lavf/sun
new file mode 100644
index 0000000000..4db0505140
--- /dev/null
+++ b/tests/ref/lavf/sun
@@ -0,0 +1,3 @@
+07518bcb0841bc677ce6aea8464ea240 *./tests/data/images/sun/02.sun
+./tests/data/images/sun/%02d.sun CRC=0xe6c71946
+304123 ./tests/data/images/sun/02.sun