diff --git a/__tests__/XMLMarshaller.js b/__tests__/XMLMarshaller.js
index 3261650..b4bfd3b 100644
--- a/__tests__/XMLMarshaller.js
+++ b/__tests__/XMLMarshaller.js
@@ -272,7 +272,7 @@ test ('20319', async () => {
 			MessageData: {
 				AppData: {
 					data: {
-						[Symbol.for ('type')]: 'getOrganizationsByEasRequest',
+						[Symbol.for ('type')]: 'GetOrganizationsByEasRequest',
 						eas:         123456,
 						countRecord: 1,
 						page:        1
@@ -282,6 +282,8 @@ test ('20319', async () => {
 		}
 	}
 
+	expect (xs.stringify (data)).toMatch (/xsi:type="ns\d*:GetOrganizationsByEasRequest"/)
+
 	expect (xs.stringify (data)).toMatch ('eas>123456<')
 
 })
diff --git a/lib/XMLMarshaller.js b/lib/XMLMarshaller.js
index 1591d35..5486f84 100644
--- a/lib/XMLMarshaller.js
+++ b/lib/XMLMarshaller.js
@@ -111,7 +111,7 @@ const XMLMarshaller = class {
 
 		if (data [XSI_TYPE]) {
 			let d = {}; for (let k in data) d [k] = data [k]
-			this.appendElementBody (this.schema.get (data [XSI_TYPE]), d)
+			this.appendContent (this.schema.getType (data [XSI_TYPE]), d)
 		}
 
 		if (type) return this.appendContent (this.xs.getType (type), data)