diff --git a/redisson-micronaut/redisson-micronaut-20/src/main/java/org/redisson/micronaut/session/RedissonSession.java b/redisson-micronaut/redisson-micronaut-20/src/main/java/org/redisson/micronaut/session/RedissonSession.java
index c5d4f1d79..1c64593d7 100644
--- a/redisson-micronaut/redisson-micronaut-20/src/main/java/org/redisson/micronaut/session/RedissonSession.java
+++ b/redisson-micronaut/redisson-micronaut-20/src/main/java/org/redisson/micronaut/session/RedissonSession.java
@@ -181,7 +181,7 @@ public class RedissonSession extends InMemorySession implements Session {
     @Override
     public MutableConvertibleValues<Object> put(CharSequence key, Object value) {
         if (value == null) {
-            return super.put(key, value);
+            return remove(key);
         }
 
         if (updateMode == RedissonHttpSessionConfiguration.UpdateMode.WRITE_BEHIND && map != null) {
diff --git a/redisson-micronaut/redisson-micronaut-30/src/main/java/org/redisson/micronaut/session/RedissonSession.java b/redisson-micronaut/redisson-micronaut-30/src/main/java/org/redisson/micronaut/session/RedissonSession.java
index 6e98bfb85..dc40fa227 100644
--- a/redisson-micronaut/redisson-micronaut-30/src/main/java/org/redisson/micronaut/session/RedissonSession.java
+++ b/redisson-micronaut/redisson-micronaut-30/src/main/java/org/redisson/micronaut/session/RedissonSession.java
@@ -181,7 +181,7 @@ public class RedissonSession extends InMemorySession implements Session {
     @Override
     public MutableConvertibleValues<Object> put(CharSequence key, Object value) {
         if (value == null) {
-            return super.put(key, value);
+            return remove(key);
         }
 
         if (updateMode == RedissonHttpSessionConfiguration.UpdateMode.WRITE_BEHIND && map != null) {
diff --git a/redisson-micronaut/redisson-micronaut-40/src/main/java/org/redisson/micronaut/session/RedissonSession.java b/redisson-micronaut/redisson-micronaut-40/src/main/java/org/redisson/micronaut/session/RedissonSession.java
index 6e98bfb85..dc40fa227 100644
--- a/redisson-micronaut/redisson-micronaut-40/src/main/java/org/redisson/micronaut/session/RedissonSession.java
+++ b/redisson-micronaut/redisson-micronaut-40/src/main/java/org/redisson/micronaut/session/RedissonSession.java
@@ -181,7 +181,7 @@ public class RedissonSession extends InMemorySession implements Session {
     @Override
     public MutableConvertibleValues<Object> put(CharSequence key, Object value) {
         if (value == null) {
-            return super.put(key, value);
+            return remove(key);
         }
 
         if (updateMode == RedissonHttpSessionConfiguration.UpdateMode.WRITE_BEHIND && map != null) {