diff --git a/.travis.yml b/.travis.yml
index eccc233bf..d769d876b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -52,6 +52,12 @@ jobs:
         - CMD="++2.13.1 test"
       name: "Run tests with Scala 2.13 and AdoptOpenJDK 11"
 
+    - env:
+        - PRE_CMD="./scripts/launch-all.sh"
+        - _JAVA_OPTIONS="-Djdbc-journal.dao=akka.persistence.jdbc.journal.dao.legacy.ByteArrayJournalDao -Djdbc-snapshot-store.dao=akka.persistence.jdbc.snapshot.dao.legacy.ByteArraySnapshotDao -Djdbc-read-journal.dao=akka.persistence.jdbc.query.dao.legacy.ByteArrayReadJournalDao"
+        - CMD="++2.12.11 test"
+        name: "Run tests with the old DAO"
+
     - stage: whitesource
       script: git branch -f "$TRAVIS_BRANCH" && git checkout "$TRAVIS_BRANCH" && sbt whitesourceCheckPolicies whitesourceUpdate
       name: "Check licenses via WhiteSource"
diff --git a/core/src/main/resources/reference.conf b/core/src/main/resources/reference.conf
index daa658249..9c86b3566 100644
--- a/core/src/main/resources/reference.conf
+++ b/core/src/main/resources/reference.conf
@@ -165,6 +165,7 @@ jdbc-journal {
   # The tag separator to use when tagging events with more than one tag.
   # should not be configured directly, but through property akka-persistence-jdbc.tagSeparator
   # in order to keep consistent behavior over write/read sides
+  # Only used for the legeacy schema
   tagSeparator = ${akka-persistence-jdbc.tagSeparator}
 
   # If you have data from pre 5.0.0 use the legacy akka.persistence.jdbc.journal.dao.legacy.ByteArrayJournalDao