diff --git a/lib/spack/spack/test/concretize.py b/lib/spack/spack/test/concretize.py
index 202ee8b3e09..b1867afc697 100644
--- a/lib/spack/spack/test/concretize.py
+++ b/lib/spack/spack/test/concretize.py
@@ -2305,7 +2305,6 @@ def test_explicit_splices(
         assert not spec.build_spec.satisfies(f"^mpich/{mpich_spec.dag_hash()}")
         assert not spec.satisfies("^zmpi")
 
-    @pytest.mark.only_clingo("Use case not supported by the original concretizer")
     @pytest.mark.db
     @pytest.mark.parametrize(
         "spec_str,mpi_name",