diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,10 @@
 
 ## Unreleased
 
+## 0.6.2.1
+
+- Fixed an off by one error in `Waterfall.TwoD.repeatLooping` that would produce overlapping wire segments in `repeatLooping`
+
 ## 0.6.2.0
 
 - Added `Waterfall.Path.Common.pathLength`, `Waterfall.Path.pathLength3D` and `Waterfall.TwoD.Path2D.pathLength2D`
diff --git a/src/Waterfall/TwoD/Path2D.hs b/src/Waterfall/TwoD/Path2D.hs
--- a/src/Waterfall/TwoD/Path2D.hs
+++ b/src/Waterfall/TwoD/Path2D.hs
@@ -89,8 +89,8 @@
             let a = unangle (e ^. _xy) - unangle (s ^. _xy)
             in if nearZero a 
                 then mempty
-                else let times :: Integer = abs . round $ pi * 2 / a 
-                      in mconcat $ [rotate2D (fromIntegral n * a) p | n <- [0..times]]
+                else let times :: Integer = round (pi * 2 / abs a)
+                      in mconcat [rotate2D (fromIntegral n * a) p | n <- [0 .. times-1]]
 
 
 -- $reexports
diff --git a/waterfall-cad.cabal b/waterfall-cad.cabal
--- a/waterfall-cad.cabal
+++ b/waterfall-cad.cabal
@@ -5,7 +5,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           waterfall-cad
-version:        0.6.2.0
+version:        0.6.2.1
 synopsis:       Declarative CAD/Solid Modeling Library
 description:    Please see the README on GitHub at <https://github.com/joe-warren/opencascade-hs#readme>
 category:       Graphics
@@ -71,7 +71,7 @@
     , lattices >=2.0 && <3
     , lens ==5.*
     , linear >=1.21 && <2
-    , opencascade-hs >=0.6.2.0 && <0.7
+    , opencascade-hs >=0.6.2.1 && <0.7
     , primitive >=0.7 && <0.10
     , resourcet >=1.2 && <1.4
   default-language: Haskell2010