diff --git a/cura/ConvexHullDecorator.py b/cura/ConvexHullDecorator.py
index 65c799619a..2b97feec82 100644
--- a/cura/ConvexHullDecorator.py
+++ b/cura/ConvexHullDecorator.py
@@ -197,7 +197,7 @@ class ConvexHullDecorator(SceneNodeDecorator):
 
                     hull = Polygon(vertex_data)
 
-                    if len(vertex_data) >= 4:
+                    if len(vertex_data) >= 3:
                         convex_hull = hull.getConvexHull()
                         offset_hull = self._offsetHull(convex_hull)
             else: