diff --git a/war/src/main/webapp/help/tools/help-label.html b/war/src/main/webapp/help/tools/help-label.html
index 77586bd26e0b030de63a2819c2061fd9d74787bd..694e69192c142a687fe8f217538a755a9ab17380 100644
--- a/war/src/main/webapp/help/tools/help-label.html
+++ b/war/src/main/webapp/help/tools/help-label.html
@@ -1,4 +1,5 @@
 <div>
     Optional label to restrict the use of this installation method.
-    Only nodes which have this label will be considered.
+    This label could be a Label Expression (for example : "linux&&x64" or "windows&&x86").
+    Only nodes which validate this label (or label expression) will be considered.
 </div>