diff --git a/meson.build b/meson.build
index 6397ee2e64..ad9ecba74f 100644
--- a/meson.build
+++ b/meson.build
@@ -2587,6 +2587,7 @@ if mkosi.found()
                         '--cache-dir', meson.current_build_dir() / 'mkosi.cache',
                         '--build-dir', meson.current_build_dir() / 'mkosi.builddir',
                         '--force',
+                        '--debug',
                         'build'
                 ],
                 depends : public_programs + [
diff --git a/test/integration-test-wrapper.py b/test/integration-test-wrapper.py
index eb7b5b3fc5..f3c7fe5b85 100755
--- a/test/integration-test-wrapper.py
+++ b/test/integration-test-wrapper.py
@@ -76,6 +76,7 @@ def main():
 
     cmd = [
         'mkosi',
+        '--debug',
         '--directory', os.fspath(args.meson_source_dir),
         '--output-dir', os.fspath(args.meson_build_dir / 'mkosi.output'),
         '--extra-search-path', os.fspath(args.meson_build_dir),