diff --git a/OpenNest.Engine/NestEngineBase.cs b/OpenNest.Engine/NestEngineBase.cs
index afb6123..20c3e84 100644
--- a/OpenNest.Engine/NestEngineBase.cs
+++ b/OpenNest.Engine/NestEngineBase.cs
@@ -308,6 +308,7 @@ namespace OpenNest
                 case NestPhase.Linear: return "Linear";
                 case NestPhase.RectBestFit: return "BestFit";
                 case NestPhase.Extents: return "Extents";
+                case NestPhase.Custom: return "Custom";
                 default: return phase.ToString();
             }
         }
diff --git a/OpenNest.Engine/NestProgress.cs b/OpenNest.Engine/NestProgress.cs
index bf76ec9..49ae0ba 100644
--- a/OpenNest.Engine/NestProgress.cs
+++ b/OpenNest.Engine/NestProgress.cs
@@ -9,7 +9,8 @@ namespace OpenNest
         RectBestFit,
         Pairs,
         Nfp,
-        Extents
+        Extents,
+        Custom
     }
 
     public class PhaseResult