diff --git a/Makefile b/Makefile
index 8a1d198..7e1f3a3 100644
--- a/Makefile
+++ b/Makefile
@@ -38,7 +38,7 @@ gen/mapPresets.conf gen/mapBattlePresets.conf &: gen/map_modoptions.validated.js
 	ts-node scripts/js/src/gen_spads_map_presets.ts gen/mapPresets.conf gen/mapBattlePresets.conf
 
 # Tests on data
-test: typecheck_scripts check_startboxes check_startpos check_photo_aspect_ratio check_archive_not_solid
+test: typecheck_scripts check_startboxes check_startpos check_photo_aspect_ratio check_archive_not_solid check_uses_mapinfo_lua
 	echo ok
 
 typecheck_scripts: gen/types/map_list.d.ts gen/types/live_maps.d.ts gen/types/cdn_maps.d.ts
@@ -56,6 +56,9 @@ check_photo_aspect_ratio: gen/types/map_list.d.ts gen/map_list.validated.json
 check_archive_not_solid: gen/types/map_list.d.ts gen/map_list.validated.json
 	ts-node scripts/js/src/check_archive_not_solid.ts
 
+check_uses_mapinfo_lua: gen/types/map_list.d.ts gen/map_list.validated.json
+	ts-node scripts/js/src/check_uses_mapinfo_lua.ts
+
 # Auxiliary build targets
 types: gen/types/map_list.d.ts gen/map_list.schema.json
 
diff --git a/scripts/js/src/check_uses_mapinfo_lua.ts b/scripts/js/src/check_uses_mapinfo_lua.ts
new file mode 100644
index 0000000..d6bfe6e
--- /dev/null
+++ b/scripts/js/src/check_uses_mapinfo_lua.ts
@@ -0,0 +1,24 @@
+// Verifies all maps use mapinfo.lua and not older methods.
+
+import { readMapList, fetchMapsMetadata } from './maps_metadata.js';
+
+const maps = await readMapList();
+const mapsMetadata = await fetchMapsMetadata(maps);
+
+const whitelist: Set<string> = new Set(['Mescaline_V2']);
+
+let anyWithoutMapinfo = false;
+for (const [rowyId, map] of Object.entries(maps)) {
+    const meta = mapsMetadata.get(rowyId);
+    if (!meta.mapInfo) {
+        if (whitelist.has(map.springName)) {
+            console.log(`${map.springName} doesn't use mapinfo.lua but whitelisted.`);
+        } else {
+            console.error(`ERROR: ${map.springName} doesn't use mapinfo.lua.`);
+            anyWithoutMapinfo = true;
+        }
+    }
+}
+if (anyWithoutMapinfo) {
+    process.exit(1);
+}