diff --git a/tests/lib/custom_lib/testcase.yaml b/tests/lib/custom_lib/testcase.yaml
index 211b5c4..9055f67 100644
--- a/tests/lib/custom_lib/testcase.yaml
+++ b/tests/lib/custom_lib/testcase.yaml
@@ -4,7 +4,6 @@ common:
     - custom_plank
     - qemu_cortex_m0
 tests:
-  lib.custom_lib:
-    build_only: false   # something benign to make a non-empty list
+  lib.custom_lib: {}
   lib.custom_lib.non_default:
     extra_args: CONFIG_CUSTOM_LIB_GET_VALUE_DEFAULT=6