diff --git a/src/pybamm/models/full_battery_models/base_battery_model.py b/src/pybamm/models/full_battery_models/base_battery_model.py
index e47a6c05c8..83d62df278 100644
--- a/src/pybamm/models/full_battery_models/base_battery_model.py
+++ b/src/pybamm/models/full_battery_models/base_battery_model.py
@@ -525,14 +525,14 @@ def __init__(self, extra_options):
 
         # Options not yet compatible with particle-size distributions
         if options["particle size"] == "distribution":
-            if options["heat of mixing"] != "false":
+            if options["lithium plating porosity change"] != "false":
                 raise NotImplementedError(
-                    "Heat of mixing submodels do not yet support particle-size "
-                    "distributions."
+                    "Lithium plating porosity change not yet supported for particle-size"
+                    " distributions."
                 )
-            if options["lithium plating"] != "none":
+            if options["heat of mixing"] != "false":
                 raise NotImplementedError(
-                    "Lithium plating submodels do not yet support particle-size "
+                    "Heat of mixing submodels do not yet support particle-size "
                     "distributions."
                 )
             if options["particle"] in ["quadratic profile", "quartic profile"]:
diff --git a/tests/unit/test_models/test_full_battery_models/test_lithium_ion/test_mpm.py b/tests/unit/test_models/test_full_battery_models/test_lithium_ion/test_mpm.py
index ad02212840..5f693264d3 100644
--- a/tests/unit/test_models/test_full_battery_models/test_lithium_ion/test_mpm.py
+++ b/tests/unit/test_models/test_full_battery_models/test_lithium_ion/test_mpm.py
@@ -123,6 +123,18 @@ def test_wycisk_ocp(self):
         model = pybamm.lithium_ion.MPM(options)
         model.check_well_posedness()
 
+    def test_mpm_with_lithium_plating(self):
+        options = {
+            "lithium plating": "irreversible",
+        }
+        model = pybamm.lithium_ion.MPM(options)
+        model.check_well_posedness()
+        options = {
+            "lithium plating": "reversible",
+        }
+        model = pybamm.lithium_ion.MPM(options)
+        model.check_well_posedness()
+
 
 class TestMPMExternalCircuits:
     def test_well_posed_voltage(self):
@@ -196,15 +208,3 @@ def test_well_posed_both_swelling_only_not_implemented(self):
         options = {"particle mechanics": "swelling only"}
         with pytest.raises(NotImplementedError):
             pybamm.lithium_ion.MPM(options)
-
-
-class TestMPMWithPlating:
-    def test_well_posed_reversible_plating_not_implemented(self):
-        options = {"lithium plating": "reversible"}
-        with pytest.raises(NotImplementedError):
-            pybamm.lithium_ion.MPM(options)
-
-    def test_well_posed_irreversible_plating_not_implemented(self):
-        options = {"lithium plating": "irreversible"}
-        with pytest.raises(NotImplementedError):
-            pybamm.lithium_ion.MPM(options)