diff --git a/exposed/example.c b/exposed/example.c
index ac01c40f..69058e4b 100644
--- a/exposed/example.c
+++ b/exposed/example.c
@@ -139,7 +139,7 @@ void Example2d(void)
 
     // And arc, centered at point 303, starting at point 304, ending at
     // point 305.
-    sys.entity[sys.entities++] = Slvs_MakeArcOfCircle(401, g, 200,
+    sys.entity[sys.entities++] = Slvs_MakeArcOfCircle(401, g, 200, 102,
                                     303, 304, 305);
 
     // Now one more point, and a distance
diff --git a/exposed/slvs.h b/exposed/slvs.h
index 6ab7d1bf..bd7fdfa3 100644
--- a/exposed/slvs.h
+++ b/exposed/slvs.h
@@ -311,6 +311,7 @@ static Slvs_Entity Slvs_MakeCubic(Slvs_hEntity h, Slvs_hGroup group,
 }
 static Slvs_Entity Slvs_MakeArcOfCircle(Slvs_hEntity h, Slvs_hGroup group,
                                         Slvs_hEntity wrkpl,
+                                        Slvs_hEntity normal,
                                         Slvs_hEntity center,
                                         Slvs_hEntity start, Slvs_hEntity end)
 {
@@ -320,6 +321,7 @@ static Slvs_Entity Slvs_MakeArcOfCircle(Slvs_hEntity h, Slvs_hGroup group,
     r.group = group;
     r.type = SLVS_E_ARC_OF_CIRCLE;
     r.wrkpl = wrkpl;
+    r.normal = normal;
     r.point[0] = center;
     r.point[1] = start;
     r.point[2] = end;