diff --git a/src/bonsai/bonsai/tool/profile.py b/src/bonsai/bonsai/tool/profile.py
index 0838ef9a6e..8e467dd182 100644
--- a/src/bonsai/bonsai/tool/profile.py
+++ b/src/bonsai/bonsai/tool/profile.py
@@ -223,6 +223,7 @@ class Profile(bonsai.core.tool.Profile):
         """Set default profile attributes to keep profile valid."""
         class_match = False
         si_conversion = ifcopenshell.util.unit.calculate_unit_scale(tool.Ifc.get())
+        # We're using for-loop as classes may not match exactly.
         for ifc_class, params in cls.DEFAULT_PROFILE_ATTRS.items():
             if profile.is_a(ifc_class):
                 class_match = True
diff --git a/src/ifcopenshell-python/ifcopenshell/api/profile/add_parameterized_profile.py b/src/ifcopenshell-python/ifcopenshell/api/profile/add_parameterized_profile.py
index 97d8ba3f81..12c57532b0 100644
--- a/src/ifcopenshell-python/ifcopenshell/api/profile/add_parameterized_profile.py
+++ b/src/ifcopenshell-python/ifcopenshell/api/profile/add_parameterized_profile.py
@@ -16,9 +16,15 @@
 # You should have received a copy of the GNU Lesser General Public License
 # along with IfcOpenShell.  If not, see <http://www.gnu.org/licenses/>.
 import ifcopenshell
+from typing import Literal
 
 
-def add_parameterized_profile(file: ifcopenshell.file, ifc_class: str) -> ifcopenshell.entity_instance:
+ProfileType = Literal["AREA", "CURVE"]
+
+
+def add_parameterized_profile(
+    file: ifcopenshell.file, ifc_class: str, profile_type: str = "AREA"
+) -> ifcopenshell.entity_instance:
     """Adds a new parameterised profile
 
     IFC offers parameterised profiles for common standardised hot roll
@@ -30,6 +36,7 @@ def add_parameterized_profile(file: ifcopenshell.file, ifc_class: str) -> ifcope
 
     :param ifc_class: The subclass of IfcParameterizedProfileDef that you'd
         like to create.
+    :param profile_type:
     :return: The newly created element depending on the specified ifc_class.
 
     Example:
@@ -40,4 +47,4 @@ def add_parameterized_profile(file: ifcopenshell.file, ifc_class: str) -> ifcope
             ifc_class="IfcCircleProfileDef")
         circle.Radius = 1.
     """
-    return file.create_entity(ifc_class)
+    return file.create_entity(ifc_class, ProfileType=profile_type)
diff --git a/src/ifcopenshell-python/ifcopenshell/util/schema.py b/src/ifcopenshell-python/ifcopenshell/util/schema.py
index 698a3a9987..d3d7b65c6a 100644
--- a/src/ifcopenshell-python/ifcopenshell/util/schema.py
+++ b/src/ifcopenshell-python/ifcopenshell/util/schema.py
@@ -118,7 +118,7 @@ def get_supertypes(
 def get_subtypes(
     declaration: ifcopenshell.ifcopenshell_wrapper.entity,
 ) -> list[ifcopenshell.ifcopenshell_wrapper.entity]:
-    """Get a flat list of subtype declarations
+    """Get a flat list of subtype declarations, recursively.
 
     Abstract classes are skipped.
 
diff --git a/src/ifcopenshell-python/test/api/profile/test_add_parameterized_profile.py b/src/ifcopenshell-python/test/api/profile/test_add_parameterized_profile.py
new file mode 100644
index 0000000000..8481592643
--- /dev/null
+++ b/src/ifcopenshell-python/test/api/profile/test_add_parameterized_profile.py
@@ -0,0 +1,40 @@
+# IfcOpenShell - IFC toolkit and geometry engine
+# Copyright (C) 2022 Dion Moult <dion@thinkmoult.com>
+#
+# This file is part of IfcOpenShell.
+#
+# IfcOpenShell is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# IfcOpenShell is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with IfcOpenShell.  If not, see <http://www.gnu.org/licenses/>.
+
+import test.bootstrap
+import ifcopenshell.api.profile
+import ifcopenshell.util.schema
+
+
+class TestAddParametrizedProfileIFC2X3(test.bootstrap.IFC2X3):
+    def test_run(self):
+        schema = ifcopenshell.schema_by_name(self.file.schema)
+        entity = schema.declaration_by_name("IfcParameterizedProfileDef").as_entity()
+        assert entity
+        for s in ifcopenshell.util.schema.get_subtypes(entity):
+            profile = ifcopenshell.api.profile.add_parameterized_profile(self.file, ifc_class=s.name())
+            assert profile.is_a() == s.name()
+            assert profile.ProfileType == "AREA"
+
+
+class TestAddParametrizedProfileIFC4(test.bootstrap.IFC4, TestAddParametrizedProfileIFC2X3):
+    pass
+
+
+class TestAddParametrizedProfileIFC4X3(test.bootstrap.IFC4, TestAddParametrizedProfileIFC2X3):
+    pass