diff --git a/src/ACadSharp.Pdf/Core/IO/PdfPen.cs b/src/ACadSharp.Pdf/Core/IO/PdfPen.cs
index 0c72590..8b3ace4 100644
--- a/src/ACadSharp.Pdf/Core/IO/PdfPen.cs
+++ b/src/ACadSharp.Pdf/Core/IO/PdfPen.cs
@@ -3,6 +3,7 @@
 using ACadSharp.Objects;
 using ACadSharp.Pdf.Extensions;
 using CSMath;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
@@ -45,6 +46,9 @@ public void DrawEntity(Entity entity, Transform transform)
 				case Circle circle:
 					this.drawCircle(circle, transform);
 					break;
+					case Hatch hatch:
+					this.drawHatch(hatch, transform);
+					break;
 				case Line line:
 					this.drawLine(line, transform);
 					break;
@@ -63,6 +67,11 @@ public void DrawEntity(Entity entity, Transform transform)
 			}
 		}
 
+		private void drawHatch(Hatch hatch, Transform transform)
+		{
+			throw new NotImplementedException();
+		}
+
 		public override string ToString()
 		{
 			return _sb.ToString();