diff --git a/Program.cs b/Program.cs
index ff694bb..4065434 100644
--- a/Program.cs
+++ b/Program.cs
@@ -551,6 +551,6 @@ public PatchOperationListBuilder WithSet(object value, Func<PropertyInfo, bool>?
             return this;
         }
 
-        public PatchOperationList Build() => _patchOperations;
+        public PatchOperationList Build() => _patchOperations.Where(op=> op is not null).ToList();
     }
 }
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