diff --git a/src/services/start-mock-server.js b/src/services/start-mock-server.js
index 242ae85..c2f8b7f 100644
--- a/src/services/start-mock-server.js
+++ b/src/services/start-mock-server.js
@@ -1,4 +1,6 @@
+import fs from 'fs';
 import OpenApiMocker from '@os3/open-api-mocker';
+import { init } from './user-flow-steps.js';
 
 /**
  * @typedef {import('../types/schema.js').Schema} Schema
@@ -12,7 +14,8 @@ import OpenApiMocker from '@os3/open-api-mocker';
  * @returns {Promise<void>}
  */
 async function startMockServer(schemas) {
-	for (const schema of schemas) {
+	const validatedSchemas = await validateSchemas(schemas);
+	for (const schema of validatedSchemas) {
 		const openApiMocker = new OpenApiMocker({
 			port: schema.port,
 			schema: schema.path,
@@ -26,4 +29,24 @@ async function startMockServer(schemas) {
 	}
 }
 
+/**
+ * Validate schemas
+ * @async
+ * @function validateSchemas
+ * @param {Schema[]} schemas - An array of schemas
+ * @returns {Promise<Schema[]>}
+ */
+async function validateSchemas(schemas) {
+	const allSchemasExists = schemas.reduce(
+		(acc, schema) => (fs.existsSync(`${process.cwd()}/${schema.path}`) ? acc : false),
+		true
+	);
+	if (!allSchemasExists) {
+		console.log('Any schema does not exists');
+		const config = await init();
+		return config.selectedSchemas;
+	}
+	return schemas;
+}
+
 export default startMockServer;
diff --git a/src/services/user-flow-steps.js b/src/services/user-flow-steps.js
index bbd4ca5..1b2d517 100644
--- a/src/services/user-flow-steps.js
+++ b/src/services/user-flow-steps.js
@@ -24,7 +24,7 @@ async function initWithConfigFile() {
 	const useExistingConfig = await confirm({
 		message: 'Do you want to use the existing config?',
 	});
-	return useExistingConfig ? existingConfig : await init();
+	return useExistingConfig ? existingConfig : init();
 }
 
 /**