diff --git a/generator/generator.go b/generator/generator.go
index 258ee7f7..44b7591c 100644
--- a/generator/generator.go
+++ b/generator/generator.go
@@ -81,6 +81,8 @@ func getTypeString(nullable bool, typeName string, schema *types.Schema, schemas
 		return "string"
 	case "hostname":
 		return "string"
+	case "nullablestring":
+		return "*string"
 	default:
 		if schema != nil && schemas != nil {
 			otherSchema := schemas.Schema(&schema.Version, typeName)
diff --git a/parse/builder/builder.go b/parse/builder/builder.go
index f27b09e3..dcc264d4 100644
--- a/parse/builder/builder.go
+++ b/parse/builder/builder.go
@@ -382,6 +382,8 @@ func ConvertSimple(fieldType string, value interface{}, op Operation) (interface
 		return convert.ToString(value), nil
 	case "reference":
 		return convert.ToString(value), nil
+	case "nullablestring":
+		return convert.ToString(value), nil
 	}
 
 	return nil, ErrComplexType