diff --git a/add_curve_ivygen.py b/add_curve_ivygen.py
index ac457172a1787c3fd0795769bcb7b93ae3f68483..66ca8c4506316f3968125c050e138d9af6f3f985 100644
--- a/add_curve_ivygen.py
+++ b/add_curve_ivygen.py
@@ -537,6 +537,10 @@ class IvyGen(bpy.types.Operator):
         return ((ob is not None) and
                 (ob.type == 'MESH') and
                 (context.mode == 'OBJECT'))
+        
+    def invoke(self, context, event):
+        self.updateIvy = True
+        return self.execute(context)
 
     def execute(self, context):
         if not self.updateIvy: