diff --git a/nodes/spatial/voronoi_on_mesh_mk2.py b/nodes/spatial/voronoi_on_mesh_mk2.py
index 202ff54ea3..384d8f29db 100644
--- a/nodes/spatial/voronoi_on_mesh_mk2.py
+++ b/nodes/spatial/voronoi_on_mesh_mk2.py
@@ -96,7 +96,7 @@ def sv_init(self, context):
         self.outputs.new('SvVerticesSocket', "Vertices")
         self.outputs.new('SvStringsSocket', "Edges")
         self.outputs.new('SvStringsSocket', "Faces")
-        self.outputs.new('SvVerticesSocket', "Sites_idx")
+        self.outputs.new('SvStringsSocket', "Sites_idx")
         self.update_sockets(context)
 
     def draw_buttons(self, context, layout):