diff --git a/application/src/main/resources/thingsboard.yml b/application/src/main/resources/thingsboard.yml
index 660e9e3a59..7da26fdc81 100644
--- a/application/src/main/resources/thingsboard.yml
+++ b/application/src/main/resources/thingsboard.yml
@@ -208,7 +208,7 @@ ui:
   # Help parameters
   help:
     # Base URL for UI help assets
-    base-url: "${UI_HELP_BASE_URL:https://raw.githubusercontent.com/thingsboard/thingsboard-ui-help/release-4.2}"
+    base-url: "${UI_HELP_BASE_URL:https://raw.githubusercontent.com/thingsboard/thingsboard-ui-help/release-4.2.1 }"
 
 # Database telemetry parameters
 database: