|  | diff --git a/third_party/agg23/agg_math_stroke.h b/third_party/agg23/agg_math_stroke.h | 
|  | index 8515d2b16..70d1f2cf9 100644 | 
|  | --- a/third_party/agg23/agg_math_stroke.h | 
|  | +++ b/third_party/agg23/agg_math_stroke.h | 
|  | @@ -173,6 +173,9 @@ void stroke_calc_cap(VertexConsumer& out_vertices, | 
|  | float a1 = atan2(dy1, -dx1); | 
|  | float a2 = a1 + FXSYS_PI; | 
|  | float da = acos(width / (width + ((1.0f / 8) / approximation_scale))) * 2; | 
|  | +      if (da < stroke_theta) { | 
|  | +        da = stroke_theta; | 
|  | +      } | 
|  | out_vertices.add(coord_type(v0.x - dx1, v0.y + dy1)); | 
|  | a1 += da; | 
|  | a2 -= da / 4; | 
|  | @@ -180,8 +183,8 @@ void stroke_calc_cap(VertexConsumer& out_vertices, | 
|  | out_vertices.add( | 
|  | coord_type(v0.x + (width * cos(a1)), v0.y + (width * sin(a1)))); | 
|  | a1 += da; | 
|  | -        } | 
|  | -        out_vertices.add(coord_type(v0.x + dx1, v0.y - dy1)); | 
|  | +      } | 
|  | +      out_vertices.add(coord_type(v0.x + dx1, v0.y - dy1)); | 
|  | } | 
|  | } | 
|  | template<class VertexConsumer> |