diff --git a/src/plone/api/addon.py b/src/plone/api/addon.py
index 510fe386..816d8378 100644
--- a/src/plone/api/addon.py
+++ b/src/plone/api/addon.py
@@ -25,7 +25,7 @@
     "AddonInformation",
     "NonInstallableAddons",
     "get_addons",
-    "get_addons_ids",
+    "get_addon_ids",
     "get_version",
     "get",
     "install",
@@ -217,11 +217,11 @@ def get_addons(limit: str = "") -> List[AddonInformation]:
     if limit in ("installed", "upgradable", "available"):
         addons = [addon for addon in addons if limit in addon.flags]
     elif limit != "":
-        raise InvalidParameterError(f"Value {limit} for parameter mode is not valid.")
+        raise InvalidParameterError(f"Parameter {limit=} is not valid.")
     return addons
 
 
-def get_addons_ids(limit: str = "") -> List[str]:
+def get_addon_ids(limit: str = "") -> List[str]:
     """List addons ids in this Plone site.
 
     :param limit: Limit list of addons.
diff --git a/src/plone/api/tests/test_addon.py b/src/plone/api/tests/test_addon.py
index eae1aa01..0e1f8564 100644
--- a/src/plone/api/tests/test_addon.py
+++ b/src/plone/api/tests/test_addon.py
@@ -56,12 +56,12 @@ def test_api_get_addons_limit_invalid(self):
         with self.assertRaises(api.exc.InvalidParameterError) as cm:
             api.addon.get_addons(limit="foobar")
         self.assertIn(
-            "Value foobar for parameter mode is not valid.", str(cm.exception)
+            "Parameter limit='foobar' is not valid.", str(cm.exception)
         )
 
-    def test_api_get_addons_ids(self):
-        """Test api.addon.get_addons_ids."""
-        result = api.addon.get_addons_ids(limit="installed")
+    def test_api_get_addon_ids(self):
+        """Test api.addon.get_addon_ids."""
+        result = api.addon.get_addon_ids(limit="installed")
         self.assertEqual(len(result), 2)
         self.assertIn(ADDON, result)