diff --git a/tests/lavf-regression.sh b/tests/lavf-regression.sh
index 7f2d0c0e96..a9d1f06de1 100755
--- a/tests/lavf-regression.sh
+++ b/tests/lavf-regression.sh
@@ -221,6 +221,10 @@ if [ -n "$do_rso" ] ; then
 do_audio_only rso
 fi
 
+if [ -n "$do_sox" ] ; then
+do_audio_only sox
+fi
+
 # pix_fmt conversions
 
 if [ -n "$do_pixfmt" ] ; then
diff --git a/tests/ref/lavf/sox b/tests/ref/lavf/sox
new file mode 100644
index 0000000000..0026480001
--- /dev/null
+++ b/tests/ref/lavf/sox
@@ -0,0 +1,3 @@
+e6f278256f145b69ed06f35b8d3585c1 *./tests/data/lavf/lavf.sox
+180256 ./tests/data/lavf/lavf.sox
+./tests/data/lavf/lavf.sox CRC=0xf1ae5536