diff --git a/konova/models/geometry.py b/konova/models/geometry.py
index 254ace44..09d81af4 100644
--- a/konova/models/geometry.py
+++ b/konova/models/geometry.py
@@ -364,7 +364,13 @@ class Geometry(BaseResource):
 
         geom_envelope = self.geom.envelope
         diff = geom_envelope - self.geom
-        complexity_factor = 1 - self.geom.area / diff.area
+
+        if diff.area == 0:
+            ratio = 1
+        else:
+            ratio = self.geom.area / diff.area
+
+        complexity_factor = 1 - ratio
         return complexity_factor