diff --git a/scripts/unit-test.py b/scripts/unit-test.py
index 229f5db..1c8ee07 100755
--- a/scripts/unit-test.py
+++ b/scripts/unit-test.py
@@ -405,6 +405,8 @@
         meson_options = parse_meson_options("meson_options.txt")
         meson_flags = [
             '-Db_colorout=never',
+            '-Dwerror=true',
+            '-Dwarning_level=3',
         ]
         if build_for_testing:
             meson_flags.append('--buildtype=debug')