diff --git a/windows/security/threat-protection/microsoft-defender-atp/customize-attack-surface-reduction.md b/windows/security/threat-protection/microsoft-defender-atp/customize-attack-surface-reduction.md
index 40242a3fe4..0786bb44f2 100644
--- a/windows/security/threat-protection/microsoft-defender-atp/customize-attack-surface-reduction.md
+++ b/windows/security/threat-protection/microsoft-defender-atp/customize-attack-surface-reduction.md
@@ -74,7 +74,10 @@ See the [attack surface reduction](attack-surface-reduction.md) topic for detail
 
 3. Expand the tree to **Windows components > Windows Defender Antivirus > Windows Defender Exploit Guard > Attack surface reduction**.
 
-4. Double-click the **Exclude files and paths from Attack surface reduction Rules** setting and set the option to **Enabled**. Click **Show** and enter each file or folder in the **Value name** column. Enter **0** in the **Value** column for each item.  Do not use quotes as they are not supported for either the **Value name** column or the **Value** column.
+4. Double-click the **Exclude files and paths from Attack surface reduction Rules** setting and set the option to **Enabled**. Click **Show** and enter each file or folder in the **Value name** column. Enter **0** in the **Value** column for each item.
+
+> [!WARNING]
+> Do not use quotes as they are not supported for either the **Value name** column or the **Value** column.
 
 ### Use PowerShell to exclude files and folders