diff --git a/tests/meson.build b/tests/meson.build
index 8b1ef64fc..9e14def60 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -183,6 +183,7 @@ foreach testcase : c_tests
       args : [exe],
       depends : runtime_repo,
       env : test_env,
+      protocol : 'tap',
       timeout : options.get('timeout', 30),
     )
   endif