diff --git a/tests/Makefile b/tests/Makefile
index 49fdbe2..209eca9 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -229,6 +229,7 @@
 qapi-schema += alternate-clash.json
 qapi-schema += alternate-conflict-dict.json
 qapi-schema += alternate-conflict-string.json
+qapi-schema += alternate-empty.json
 qapi-schema += alternate-good.json
 qapi-schema += alternate-nested.json
 qapi-schema += alternate-unknown.json
@@ -280,6 +281,7 @@
 qapi-schema += flat-union-clash-branch.json
 qapi-schema += flat-union-clash-member.json
 qapi-schema += flat-union-clash-type.json
+qapi-schema += flat-union-empty.json
 qapi-schema += flat-union-inline.json
 qapi-schema += flat-union-int-branch.json
 qapi-schema += flat-union-invalid-branch-key.json
@@ -338,6 +340,7 @@
 qapi-schema += union-clash-branches.json
 qapi-schema += union-clash-data.json
 qapi-schema += union-clash-type.json
+qapi-schema += union-empty.json
 qapi-schema += union-invalid-base.json
 qapi-schema += union-max.json
 qapi-schema += union-optional-branch.json