diff --git a/tests/test_api.py b/tests/test_api.py
index 8913eedc..310549f5 100644
--- a/tests/test_api.py
+++ b/tests/test_api.py
@@ -1,5 +1,6 @@
 """Tests for alternative identifiers."""
 
+import importlib.util
 import unittest
 from contextlib import ExitStack
 from unittest import mock
@@ -214,11 +215,12 @@ def test_api(self) -> None:
             ]
             self.assertEqual(expected, literal_mappings)
 
-            grounder = get_grounder(TEST_P1)
-            scored_match = grounder.ground_best(syn1)
-            self.assertIsNotNone(scored_match)
-            self.assertEqual(TEST_P1, scored_match.term.db)
-            self.assertEqual("1", scored_match.term.id)
+            if importlib.util.find_spec("gilda"):
+                grounder = get_grounder(TEST_P1)
+                scored_match = grounder.ground_best(syn1)
+                self.assertIsNotNone(scored_match)
+                self.assertEqual(TEST_P1, scored_match.term.db)
+                self.assertEqual("1", scored_match.term.id)
 
             # Properties
 
diff --git a/tox.ini b/tox.ini
index fe9d193f..41e9d049 100644
--- a/tox.ini
+++ b/tox.ini
@@ -45,7 +45,6 @@ commands =
 extras =
     # See the [project.optional-dependencies] entry in pyproject.toml for "tests"
     tests
-    grounding
 set_env =
     # this setting gets inherited into all environments, meaning
     # that things that call uv commands don't require a --preview