diff --git a/src/ifcpatch/ifcpatch/recipes/MergeDuplicateTypes.py b/src/ifcpatch/ifcpatch/recipes/MergeDuplicateTypes.py
index 4b4524bd0f..f2461652b7 100644
--- a/src/ifcpatch/ifcpatch/recipes/MergeDuplicateTypes.py
+++ b/src/ifcpatch/ifcpatch/recipes/MergeDuplicateTypes.py
@@ -17,6 +17,7 @@
 # along with IfcPatch.  If not, see <http://www.gnu.org/licenses/>.
 
 import ifcopenshell
+import ifcopenshell.api
 import ifcopenshell.util.element