diff --git a/EnvelopeGenerator.Application/Pdf/BurnPdfCommand.cs b/EnvelopeGenerator.Application/Pdf/BurnPdfCommand.cs
index c1777f41..1bc9398b 100644
--- a/EnvelopeGenerator.Application/Pdf/BurnPdfCommand.cs
+++ b/EnvelopeGenerator.Application/Pdf/BurnPdfCommand.cs
@@ -313,7 +313,10 @@ public class BurnPdfCommandHandler : IRequestHandler<BurnPdfCommand>
             return;
 
         // Convert pixels to Inches
-        var oBounds = pAnnotation.Bbox.Select(ToInches).ToList();
+        var oBounds = pAnnotation.Bbox?.Select(ToInches).ToList();
+
+        if (oBounds is null || oBounds.Count < 4)
+            return;
 
         var oX = oBounds[0];
         var oY = oBounds[1];