diff --git a/redisson/src/main/java/org/redisson/api/RMapCache.java b/redisson/src/main/java/org/redisson/api/RMapCache.java
index 5df58bf73..970ad0075 100644
--- a/redisson/src/main/java/org/redisson/api/RMapCache.java
+++ b/redisson/src/main/java/org/redisson/api/RMapCache.java
@@ -53,7 +53,7 @@ public interface RMapCache<K, V> extends RMap<K, V>, RMapCacheAsync<K, V> {
      * @param ttl - time to live for key\value entry.
      *              If <code>0</code> then stores infinitely.
      * @param ttlUnit - time unit
-     * @return previous associated value
+     * @return current associated value
      */
     V putIfAbsent(K key, V value, long ttl, TimeUnit ttlUnit);
 
@@ -79,7 +79,7 @@ public interface RMapCache<K, V> extends RMap<K, V>, RMapCacheAsync<K, V> {
      * if <code>maxIdleTime</code> and <code>ttl</code> params are equal to <code>0</code>
      * then entry stores infinitely.
      *
-     * @return previous associated value
+     * @return current associated value
      */
     V putIfAbsent(K key, V value, long ttl, TimeUnit ttlUnit, long maxIdleTime, TimeUnit maxIdleUnit);
 
@@ -137,7 +137,8 @@ public interface RMapCache<K, V> extends RMap<K, V>, RMapCacheAsync<K, V> {
      * @param ttl - time to live for key\value entry.
      *              If <code>0</code> then stores infinitely.
      * @param ttlUnit - time unit
-     * @return <code>true</code> if value has been set successfully
+     * @return <code>true</code> if key is a new key in the hash and value was set.
+     *         <code>false</code> if key already exists in the hash and the value was updated.
      */
     boolean fastPut(K key, V value, long ttl, TimeUnit ttlUnit);
 
@@ -163,7 +164,8 @@ public interface RMapCache<K, V> extends RMap<K, V>, RMapCacheAsync<K, V> {
      * if <code>maxIdleTime</code> and <code>ttl</code> params are equal to <code>0</code>
      * then entry stores infinitely.
 
-     * @return previous associated value
+     * @return <code>true</code> if key is a new key in the hash and value was set.
+     *         <code>false</code> if key already exists in the hash and the value was updated.
      */
     boolean fastPut(K key, V value, long ttl, TimeUnit ttlUnit, long maxIdleTime, TimeUnit maxIdleUnit);