diff --git a/docs/lib-arc.md b/docs/lib-arc.md
index 0dedf01c..4acef1ef 100644
--- a/docs/lib-arc.md
+++ b/docs/lib-arc.md
@@ -25,7 +25,7 @@ Creates an arc. You can pass a 2 element vector to define the central angle. Its
     include <arc.scad>;
     
     $fn = 24;
-    arc(radius = 20, angles = [45, 290], width = 2, width_mode = "LINE_INWARD");
+    arc(radius = 20, angles = [45, 290], width = 2, width_mode = "LINE_OUTWARD");
     %circle(r = 20); 
 
 ![arc](images/lib-arc-2.JPG)
@@ -34,7 +34,7 @@ Creates an arc. You can pass a 2 element vector to define the central angle. Its
     include <arc.scad>;
     
     $fn = 24;
-    arc(radius = 20, angles = [45, 290], width = 2, width_mode = "LINE_OUTWARD");
+    arc(radius = 20, angles = [45, 290], width = 2, width_mode = "LINE_INWARD");
     %circle(r = 20); 
 
 ![arc](images/lib-arc-3.JPG)