diff --git a/windows/security/threat-protection/microsoft-defender-atp/machine-tags.md b/windows/security/threat-protection/microsoft-defender-atp/machine-tags.md
index daf8b70f1e..a3fa8fc591 100644
--- a/windows/security/threat-protection/microsoft-defender-atp/machine-tags.md
+++ b/windows/security/threat-protection/microsoft-defender-atp/machine-tags.md
@@ -71,6 +71,8 @@ You can also delete tags from this view.
 >- Windows 8.1
 >- Windows 7 SP1
 
+> Please note that the maximum number of allowed characters is hard-coded to 32.
+
 Machines with similar tags can be handy when you need to apply contextual action on a specific list of machines.
 
 Use the following registry key entry to add a tag on a machine:
@@ -82,3 +84,4 @@ Use the following registry key entry to add a tag on a machine:
 >[!NOTE]
 >The device tag is part of the machine information report that's generated once a day. As an alternative, you may choose to restart the endpoint that would transfer a new machine information report.
 
+