diff --git a/src/main/resources/application-postgres.properties b/src/main/resources/application-postgres.properties
index 60889b43c..b265d7e5b 100644
--- a/src/main/resources/application-postgres.properties
+++ b/src/main/resources/application-postgres.properties
@@ -1,3 +1,4 @@
+# database init, supports postgres too
 database=postgres
 spring.datasource.url=${POSTGRES_URL:jdbc:postgresql://localhost/petclinic}
 spring.datasource.username=${POSTGRES_USER:petclinic}