diff --git a/ui-ngx/src/app/shared/models/constants.ts b/ui-ngx/src/app/shared/models/constants.ts
index 74eefbcd14..376a932adb 100644
--- a/ui-ngx/src/app/shared/models/constants.ts
+++ b/ui-ngx/src/app/shared/models/constants.ts
@@ -133,6 +133,7 @@ export const HelpLinks = {
     ruleNodeSendEmail: helpBaseUrl + '/docs/user-guide/rule-engine-2-0/external-nodes/#send-email-node',
     ruleNodeSendSms: helpBaseUrl + '/docs/user-guide/rule-engine-2-0/external-nodes/#send-sms-node',
     ruleNodeMath: helpBaseUrl + '/docs/user-guide/rule-engine-2-0/action-nodes/#math-function-node',
+    ruleNodeCalculateDelta: helpBaseUrl + '/docs/user-guide/rule-engine-2-0/enrichment-nodes/#calculate-delta',
     tenants: helpBaseUrl + '/docs/user-guide/ui/tenants',
     tenantProfiles: helpBaseUrl + '/docs/user-guide/ui/tenant-profiles',
     customers: helpBaseUrl + '/docs/user-guide/ui/customers',
diff --git a/ui-ngx/src/app/shared/models/rule-node.models.ts b/ui-ngx/src/app/shared/models/rule-node.models.ts
index 9d78a5ced8..ef043ced93 100644
--- a/ui-ngx/src/app/shared/models/rule-node.models.ts
+++ b/ui-ngx/src/app/shared/models/rule-node.models.ts
@@ -438,6 +438,7 @@ const ruleNodeClazzHelpLinkMap = {
   'org.thingsboard.rule.engine.metadata.TbGetRelatedAttributeNode': 'ruleNodeRelatedAttributes',
   'org.thingsboard.rule.engine.metadata.TbGetTenantAttributeNode': 'ruleNodeTenantAttributes',
   'org.thingsboard.rule.engine.metadata.TbGetTenantDetailsNode': 'ruleNodeTenantDetails',
+  'org.thingsboard.rule.engine.metadata.CalculateDeltaNode': 'ruleNodeCalculateDelta',
   'org.thingsboard.rule.engine.transform.TbChangeOriginatorNode': 'ruleNodeChangeOriginator',
   'org.thingsboard.rule.engine.transform.TbTransformMsgNode': 'ruleNodeTransformMsg',
   'org.thingsboard.rule.engine.mail.TbMsgToEmailNode': 'ruleNodeMsgToEmail',