diff --git a/APIJSON-Java-Server/APIJSONBoot-MultiDataSource/src/main/java/apijson/boot/DemoDataSourceConfig.java b/APIJSON-Java-Server/APIJSONBoot-MultiDataSource/src/main/java/apijson/boot/DemoDataSourceConfig.java
index 338432b8..4e6bd717 100644
--- a/APIJSON-Java-Server/APIJSONBoot-MultiDataSource/src/main/java/apijson/boot/DemoDataSourceConfig.java
+++ b/APIJSON-Java-Server/APIJSONBoot-MultiDataSource/src/main/java/apijson/boot/DemoDataSourceConfig.java
@@ -44,6 +44,8 @@ public HikariDataSource hikaricpDataSource() {
 	 * https://github.com/alibaba/druid/blob/master/src/test/java/com/alibaba/druid/DbTestCase.java
 	 * @author Lemon
 	 */
+	// Need to be specify to explicit one when using multiple datasource. Use this or config in application.yml
+	// @FlywayDataSource
 	@Bean
 	@ConfigurationProperties(prefix = "spring.datasource.druid")
 	public DruidDataSource druidDataSource() {
diff --git a/APIJSON-Java-Server/APIJSONBoot-MultiDataSource/src/main/resources/application.yml b/APIJSON-Java-Server/APIJSONBoot-MultiDataSource/src/main/resources/application.yml
index 86bf71b3..bb4ece1c 100644
--- a/APIJSON-Java-Server/APIJSONBoot-MultiDataSource/src/main/resources/application.yml
+++ b/APIJSON-Java-Server/APIJSONBoot-MultiDataSource/src/main/resources/application.yml
@@ -1,4 +1,9 @@
 spring:
+# If using flyway-core dependency, either comment this out or use @FlywayDatasource in DemoDataSourceConfig
+#  flyway:
+#    url: ${spring.datasource.hikari.jdbc-url}
+#    user: ${spring.datasource.hikari.username}
+#    password: ${spring.datasource.hikari.password}
   datasource:
     # type: com.zaxxer.hikari.HikariDataSource
     # driver-class-name: com.mysql.cj.jdbc.Driver