diff --git a/scenario/consistency_checker.py b/scenario/consistency_checker.py
index 9a0ffdd0..b48a16c6 100644
--- a/scenario/consistency_checker.py
+++ b/scenario/consistency_checker.py
@@ -227,6 +227,7 @@ def _check_action_param_types(
     to_python_type = {
         "string": str,
         "boolean": bool,
+        "integer": int,
         "number": Number,
         "array": Sequence,
         "object": dict,
diff --git a/tests/test_consistency_checker.py b/tests/test_consistency_checker.py
index 062f32d4..8afc84c9 100644
--- a/tests/test_consistency_checker.py
+++ b/tests/test_consistency_checker.py
@@ -304,22 +304,35 @@ def test_action_name():
     )
 
 
-def test_action_params_type():
-    action = Action("foo", params={"bar": "baz"})
+_ACTION_TYPE_CHECKS = [
+    ("string", "baz", None),
+    ("boolean", True, "baz"),
+    ("integer", 42, 1.5),
+    ("number", 28.8, "baz"),
+    ("array", ["a", "b", "c"], 1.5),  # A string is an acceptable array.
+    ("object", {"k": "v"}, "baz"),
+]
+
+
+@pytest.mark.parametrize("ptype,good,bad", _ACTION_TYPE_CHECKS)
+def test_action_params_type(ptype, good, bad):
+    action = Action("foo", params={"bar": good})
     assert_consistent(
         State(),
         action.event,
         _CharmSpec(
-            MyCharm, meta={}, actions={"foo": {"params": {"bar": {"type": "string"}}}}
-        ),
-    )
-    assert_inconsistent(
-        State(),
-        action.event,
-        _CharmSpec(
-            MyCharm, meta={}, actions={"foo": {"params": {"bar": {"type": "boolean"}}}}
+            MyCharm, meta={}, actions={"foo": {"params": {"bar": {"type": ptype}}}}
         ),
     )
+    if bad is not None:
+        action = Action("foo", params={"bar": bad})
+        assert_inconsistent(
+            State(),
+            action.event,
+            _CharmSpec(
+                MyCharm, meta={}, actions={"foo": {"params": {"bar": {"type": ptype}}}}
+            ),
+        )
 
 
 def test_duplicate_relation_ids():