diff --git a/data/meson.build b/data/meson.build
index d31274b5de470f4ef4d71f22ad86442d7bf7eea8..2bc4547a1a604f60a16f5e8094999985c9e535d1 100644
--- a/data/meson.build
+++ b/data/meson.build
@@ -49,7 +49,7 @@ if appstream_util.found()
   test(
     'validate-appdata', appstream_util,
     args: [
-      'validate-relax', '--nonet', appdata_file.full_path()
+      'validate-strict', '--nonet', appdata_file.full_path()
     ]
   )
 endif