diff --git a/spring-session-core/src/main/java/org/springframework/session/MapSession.java b/spring-session-core/src/main/java/org/springframework/session/MapSession.java
index bcfee250..dd5fde8a 100644
--- a/spring-session-core/src/main/java/org/springframework/session/MapSession.java
+++ b/spring-session-core/src/main/java/org/springframework/session/MapSession.java
@@ -132,10 +132,6 @@ public final class MapSession implements Session, Serializable {
 		return this.originalId;
 	}
 
-	void setOriginalId(String originalId) {
-		this.originalId = originalId;
-	}
-
 	@Override
 	public String changeSessionId() {
 		String changedId = generateId();
diff --git a/spring-session-core/src/main/java/org/springframework/session/MapSessionRepository.java b/spring-session-core/src/main/java/org/springframework/session/MapSessionRepository.java
index 03762735..c18332c0 100644
--- a/spring-session-core/src/main/java/org/springframework/session/MapSessionRepository.java
+++ b/spring-session-core/src/main/java/org/springframework/session/MapSessionRepository.java
@@ -73,7 +73,6 @@ public class MapSessionRepository implements SessionRepository<MapSession> {
 	public void save(MapSession session) {
 		if (!session.getId().equals(session.getOriginalId())) {
 			this.sessions.remove(session.getOriginalId());
-			session.setOriginalId(session.getId());
 		}
 		this.sessions.put(session.getId(), new MapSession(session));
 	}
diff --git a/spring-session-core/src/main/java/org/springframework/session/ReactiveMapSessionRepository.java b/spring-session-core/src/main/java/org/springframework/session/ReactiveMapSessionRepository.java
index d7287ae8..eb551051 100644
--- a/spring-session-core/src/main/java/org/springframework/session/ReactiveMapSessionRepository.java
+++ b/spring-session-core/src/main/java/org/springframework/session/ReactiveMapSessionRepository.java
@@ -76,7 +76,6 @@ public class ReactiveMapSessionRepository implements ReactiveSessionRepository<M
 		return Mono.fromRunnable(() -> {
 			if (!session.getId().equals(session.getOriginalId())) {
 				this.sessions.remove(session.getOriginalId());
-				session.setOriginalId(session.getId());
 			}
 			this.sessions.put(session.getId(), new MapSession(session));
 		});