diff --git a/test/unit/prv.c b/test/unit/prv.c
index 03b281a..a06c3d3 100644
--- a/test/unit/prv.c
+++ b/test/unit/prv.c
@@ -31,7 +31,7 @@ test_emit(const char *path)
 	}
 
 	for (int i = 0; i < NROWS; i++)
-		if (prv_register(&prv, i, type, &bay, &chan[i]) != 0)
+		if (prv_register(&prv, i, type, &bay, &chan[i], 0) != 0)
 			die("prv_register failed\n");
 
 	for (int i = 0; i < NROWS; i++)
@@ -80,7 +80,7 @@ test_duplicate(const char *path)
 	if (bay_register(&bay, &chan) != 0)
 		die("bay_register failed\n");
 
-	if (prv_register(&prv, 0, type, &bay, &chan) != 0)
+	if (prv_register(&prv, 0, type, &bay, &chan, 0) != 0)
 		die("prv_register failed\n");
 
 	if (chan_set(&chan, value_int64(1000)) != 0)
diff --git a/test/unit/value.c b/test/unit/value.c
index b2e650a..c93ff0a 100644
--- a/test/unit/value.c
+++ b/test/unit/value.c
@@ -19,5 +19,11 @@ main(void)
 
 	err("OK\n");
 
+	a = value_null();
+	b = value_null();
+
+	if (!value_is_equal(&a, &b))
+		die("null not equal");
+
 	return 0;
 }