diff --git a/core/app/datasource/src/main/resources/application.conf b/core/app/datasource/src/main/resources/application.conf
index f83c87979..8a6084116 100644
--- a/core/app/datasource/src/main/resources/application.conf
+++ b/core/app/datasource/src/main/resources/application.conf
@@ -26,9 +26,9 @@ io.openk9 {
       timeout = ${?IO_OPENK9_SCHEDULATION_CONSUMER_TIMEOUT}
    }
    purge {
-    cron = 0 0 1 * * ?
+    cron = "0 0 1 * * ?"
     cron = ${?IO_OPENK9_SCHEDULATION_PURGE_CRON}
-    maxAge = P2D
+    maxAge = "P2D"
     maxAge = ${?IO_OPENK9_SCHEDULATION_PURGE_MAX_AGE}
    }
   }