diff --git a/WHATS_NEW b/WHATS_NEW
index 7508794bb..8e6ca107b 100644
--- a/WHATS_NEW
+++ b/WHATS_NEW
@@ -1,5 +1,6 @@
 Version 2.02.128 - 
 ===================================
+  Allocation setting cache_pool_cachemode is replaced by cache_mode.
   Don't attempt to close config file that couldn't be opened.
   Check for valid cache mode in validation of cache segment.
   Change internal interface handling cache mode and policy.
diff --git a/lib/config/config_settings.h b/lib/config/config_settings.h
index bdf7e6ca4..399f7482f 100644
--- a/lib/config/config_settings.h
+++ b/lib/config/config_settings.h
@@ -472,7 +472,8 @@ cfg(allocation_cache_mode_CFG, "cache_mode", allocation_CFG_SECTION, CFG_PROFILA
 	"writethrough - Data blocks are immediately written from\n"
 	"the cache to disk.\n"
 	"writeback - Data blocks are written from the cache back\n"
-	"to disk after some delay to improve performance.\n")
+	"to disk after some delay to improve performance.\n"
+	"This setting replaces allocation/cache_pool_cachemode.\n")
 
 cfg(allocation_cache_policy_CFG, "cache_policy", allocation_CFG_SECTION, CFG_PROFILABLE | CFG_DEFAULT_UNDEFINED, CFG_TYPE_STRING, 0, vsn(2, 2, 128), NULL, 0, NULL,
 	"The default cache policy used for new cache volume.\n"