diff --git a/butils.py b/butils.py
index da33af4..0764805 100644
--- a/butils.py
+++ b/butils.py
@@ -132,7 +132,7 @@ def calc_bezier_length(bezier_point_1, bezier_point_2, resolution=20):
     step = 1/resolution
     previous_p = bezier_point_1.co
     length = 0
-    for i in range(0, resolution):
+    for i in range(-1, resolution):
         t = (i + 1) * step
         p = calc_point_on_bezier(bezier_point_1, bezier_point_2, t)
         length += (p - previous_p).length