diff --git a/rule-engine/rule-engine-components/src/main/java/org/thingsboard/rule/engine/delay/TbMsgDelayNode.java b/rule-engine/rule-engine-components/src/main/java/org/thingsboard/rule/engine/delay/TbMsgDelayNode.java
index 17cdae53b8..989a080f88 100644
--- a/rule-engine/rule-engine-components/src/main/java/org/thingsboard/rule/engine/delay/TbMsgDelayNode.java
+++ b/rule-engine/rule-engine-components/src/main/java/org/thingsboard/rule/engine/delay/TbMsgDelayNode.java
@@ -41,7 +41,10 @@ import static org.thingsboard.rule.engine.api.TbRelationTypes.SUCCESS;
         name = "delay (deprecated)",
         configClazz = TbMsgDelayNodeConfiguration.class,
         nodeDescription = "Delays incoming message (deprecated)",
-        nodeDetails = "Deprecated! Delays messages for configurable period. Please note, this node acknowledges the message from the current queue (message will be removed from queue)",
+        nodeDetails = "Delays messages for a configurable period. " +
+                "Please note, this node acknowledges the message from the current queue (message will be removed from queue). " +
+                "Deprecated because the acknowledged message still stays in memory (to be delayed) and this " +
+                "does not guarantee that message will be processed even if the \"retry failures and timeouts\" processing strategy will be chosen.",
         icon = "pause",
         uiResources = {"static/rulenode/rulenode-core-config.js"},
         configDirective = "tbActionNodeMsgDelayConfig"