diff --git a/src/Graphics/Canvas.js b/src/Graphics/Canvas.js
index cbbd541..a0b796b 100644
--- a/src/Graphics/Canvas.js
+++ b/src/Graphics/Canvas.js
@@ -230,7 +230,7 @@ exports.closePath = function(ctx) {
 exports.arc = function(ctx) {
     return function(a) {
         return function() {
-            ctx.arc(a.x, a.y, a.r, a.start, a.end);
+            ctx.arc(a.x, a.y, a.r, a.start, a.end, a.clockwise);
         };
     };
 };
diff --git a/src/Graphics/Canvas.purs b/src/Graphics/Canvas.purs
index 666dfd5..0748036 100644
--- a/src/Graphics/Canvas.purs
+++ b/src/Graphics/Canvas.purs
@@ -418,6 +418,7 @@ type Arc =
   , r :: Number
   , start :: Number
   , end   :: Number
+  , anti :: Boolean
   }
 
 -- | Render an arc object.