diff --git a/PROMS/Volian.Svg.Library/iTextSharp.cs b/PROMS/Volian.Svg.Library/iTextSharp.cs
index b35a66ed..5e8ca7e5 100644
--- a/PROMS/Volian.Svg.Library/iTextSharp.cs
+++ b/PROMS/Volian.Svg.Library/iTextSharp.cs
@@ -97,6 +97,7 @@ namespace Volian.Svg.Library
 			_MyContentByte = cb;
 			SvgMeasurement X = new SvgMeasurement(x-6, E_MeasurementUnits.PT); // Not sure why this is? seems to be a character too far to the right?
 			SvgMeasurement Y = new SvgMeasurement(Height.GetSizeInPoints(72) - y, E_MeasurementUnits.PT);
+			if (!this.LookUp.ContainsKey(macroDef)) return;   // AEP - DU1 (missing C22 macro for AEP)
 			SvgGroup macro = this[macroDef] as SvgGroup;
 			macro.SvgParts.Draw(cb, MyScale.AdjustOrigin(X, Y), this,this);
 		}