diff --git a/src/PKPass.ts b/src/PKPass.ts
index ec9e26e..f3bd977 100644
--- a/src/PKPass.ts
+++ b/src/PKPass.ts
@@ -22,14 +22,6 @@ interface NamedBuffers {
 	[key: string]: Buffer;
 }
 
-namespace PKPass {
-	export interface Template {
-		model: string;
-		certificates: Schemas.Certificates;
-		overrides?: Schemas.OverridesSupportedOptions;
-	}
-}
-
 type TransitTypes = `PKTransitType${
 	| "Air"
 	| "Boat"
@@ -58,8 +50,8 @@ export default class PKPass extends Bundle {
 	 * @returns
 	 */
 
-	static async from(source: PKPass | PKPass.Template): Promise<PKPass> {
-		let certificates: Schemas.Certificates = undefined;
+	static async from(source: PKPass | Schemas.Template): Promise<PKPass> {
+		let certificates: Schemas.CertificatesSchema = undefined;
 		let buffers: NamedBuffers = undefined;
 
 		if (!source) {
diff --git a/src/schemas/index.ts b/src/schemas/index.ts
index ec80339..ec480c9 100644
--- a/src/schemas/index.ts
+++ b/src/schemas/index.ts
@@ -78,15 +78,15 @@ export const CertificatesSchema = Joi.object<CertificatesSchema>()
 	})
 	.required();
 
-export interface PassInstance {
-	model: PartitionedBundle;
+export interface Template {
+	model: string;
 	certificates: CertificatesSchema;
 	overrides?: OverridesSupportedOptions;
 }
 
-export const PassInstance = Joi.object<PassInstance>().keys({
-	model: Joi.alternatives(Joi.object(), Joi.string()).required(),
-	certificates: Joi.object(),
+export const Template = Joi.object<Template>({
+	model: Joi.string().required(),
+	certificates: Joi.object().required(),
 	overrides: Joi.object(),
 });
 
@@ -181,7 +181,7 @@ type AvailableSchemas =
 	| typeof PassFields
 	| typeof Personalization
 	| typeof TransitType
-	| typeof PassInstance
+	| typeof Template
 	| typeof CertificatesSchema
 	| typeof OverridesSupportedOptions;