diff --git a/FingerJoints.manifest b/FingerJoints.manifest
index b82a034..d51b450 100644
--- a/FingerJoints.manifest
+++ b/FingerJoints.manifest
@@ -6,7 +6,7 @@
 	"description":	{
 		"":	"An add-in for making finger joints."
 	},
-	"version":	"1.3.0",
+	"version":	"1.4.0",
 	"runOnStartup":	true,
 	"supportedOS":	"windows|mac",
 	"editEnabled":	true
diff --git a/FingerJoints.py b/FingerJoints.py
index c8f6e09..acfff8c 100644
--- a/FingerJoints.py
+++ b/FingerJoints.py
@@ -86,6 +86,12 @@ def doExecute(self):
     def createCustomFeature(self, inputs, toolBody0, toolBody1):
         app = adsk.core.Application.get()
         activeComponent = app.activeProduct.activeComponent
+        design = activeComponent.parentDesign
+
+        # Temporarily switch to parametric design
+        previousDesignType = design.designType
+        design.designType = adsk.fusion.DesignTypes.ParametricDesignType
+
         # We will later group all created features into a custom feature.
         # For that reason, we have to remember the first and last feature that is part of this group.
         tool0Feature = createBaseFeature(activeComponent, toolBody0, "tool0")
@@ -93,6 +99,8 @@ def createCustomFeature(self, inputs, toolBody0, toolBody1):
         tool1Feature = createBaseFeature(activeComponent, toolBody1, "tool1")
         createCutFeature(activeComponent, inputs.body1, tool1Feature)
 
+        design.designType = previousDesignType
+
     def onDestroy(self, args: adsk.core.CommandEventArgs):
         super(CreateFingerJointCommand, self).onDestroy(args)
         if args.terminationReason == adsk.core.CommandTerminationReason.CompletedTerminationReason: