diff --git a/tests/command_line/test_enumlib_caller.py b/tests/command_line/test_enumlib_caller.py
index b0f134cbdd5..aa3cebff4a3 100644
--- a/tests/command_line/test_enumlib_caller.py
+++ b/tests/command_line/test_enumlib_caller.py
@@ -13,12 +13,11 @@
 from pymatgen.transformations.standard_transformations import SubstitutionTransformation
 from pymatgen.util.testing import TEST_FILES_DIR, PymatgenTest
 
-enum_cmd = which("enum.x") or which("multienum.x")
-makestr_cmd = which("makestr.x") or which("makeStr.x") or which("makeStr.py")
-enumlib_present = enum_cmd and makestr_cmd
+ENUM_CMD = which("enum.x") or which("multienum.x")
+MAKESTR_CMD = which("makestr.x") or which("makeStr.x") or which("makeStr.py")
 
 
-@pytest.mark.skipif(not enumlib_present, reason="enum_lib not present.")
+@pytest.mark.skipif(not (ENUM_CMD and MAKESTR_CMD), reason="enumlib not present.")
 class TestEnumlibAdaptor(PymatgenTest):
     def test_init(self):
         struct = self.get_structure("LiFePO4")
diff --git a/tests/command_line/test_gulp_caller.py b/tests/command_line/test_gulp_caller.py
index c0e95072292..18c3f05c268 100644
--- a/tests/command_line/test_gulp_caller.py
+++ b/tests/command_line/test_gulp_caller.py
@@ -29,13 +29,15 @@
 
 TEST_DIR = f"{TEST_FILES_DIR}/command_line/gulp"
 
-gulp_present = which("gulp") and os.getenv("GULP_LIB") and ("win" not in sys.platform)
-# disable gulp tests for now. Right now, it is compiled against libgfortran3, which is no longer supported in the new
-# Ubuntu 20.04.
-gulp_present = False
+GULP_PRESENT = which("gulp") and os.getenv("GULP_LIB") and ("win" not in sys.platform)
+# Disable GULP tests for now: it is compiled against `libgfortran3``,
+# which is no longer supported in Ubuntu 20.04 and onwards.
+GULP_PRESENT = False
+
+if not GULP_PRESENT:
+    pytest.skip(reason="GULP not available", allow_module_level=True)
 
 
-@pytest.mark.skipif(not gulp_present, reason="gulp not present.")
 class TestGulpCaller:
     def test_run(self):
         mgo_lattice = np.eye(3) * 4.212
@@ -104,7 +106,6 @@ def test_decimal(self):
         caller.run(buckingham_input)
 
 
-@pytest.mark.skipif(not gulp_present, reason="gulp not present.")
 class TestGulpIO(TestCase):
     def setUp(self):
         self.structure = Structure.from_file(f"{VASP_IN_DIR}/POSCAR_Al12O18")
@@ -275,7 +276,6 @@ def test_tersoff_input(self):
         self.gio.tersoff_input(self.structure)
 
 
-@pytest.mark.skipif(not gulp_present, reason="gulp not present.")
 class TestGlobalFunctions(TestCase):
     def setUp(self):
         mgo_latt = np.eye(3) * 4.212
@@ -327,7 +327,6 @@ def test_get_energy_relax_structure_buckingham(self):
         assert site_len == len(self.mgo_uc)
 
 
-@pytest.mark.skipif(not gulp_present, reason="gulp not present.")
 class TestBuckinghamPotentialLewis(TestCase):
     def setUp(self):
         self.bpl = BuckinghamPotential("lewis")
@@ -355,7 +354,6 @@ def test_spring(self):
         assert self.bpl.spring_dict["O"] != ""
 
 
-@pytest.mark.skipif(not gulp_present, reason="gulp not present.")
 class TestBuckinghamPotentialBush(TestCase):
     def setUp(self):
         self.bpb = BuckinghamPotential("bush")