diff --git a/src/Sonarr.Http/ClientSchema/SchemaBuilder.cs b/src/Sonarr.Http/ClientSchema/SchemaBuilder.cs
index 1c8f47d5c..739fe78a5 100644
--- a/src/Sonarr.Http/ClientSchema/SchemaBuilder.cs
+++ b/src/Sonarr.Http/ClientSchema/SchemaBuilder.cs
@@ -46,7 +46,10 @@ namespace Sonarr.Http.ClientSchema
                 var propertyType = mapping.PropertyType;
                 var field = fields.Find(f => f.Name == mapping.Field.Name);
 
-                mapping.SetterFunc(target, field.Value);
+                if (field != null)
+                {
+                    mapping.SetterFunc(target, field.Value);
+                }
             }
 
             return target;