diff --git a/windows/client-management/mdm/firewall-csp.md b/windows/client-management/mdm/firewall-csp.md
index a677b5b7ee..48f77c31ec 100644
--- a/windows/client-management/mdm/firewall-csp.md
+++ b/windows/client-management/mdm/firewall-csp.md
@@ -343,7 +343,7 @@ Value type is string. Supported operations are Add, Get, Replace, and Delete.
 
 
 <a href="" id="icmptypesandcodes"></a>**FirewallRules/_FirewallRuleName_/IcmpTypesAndCodes**
-ICMP types and codes applicable to the firewall rule. To specify all ICMP types and codes, use the “*” character. For specific ICMP types and codes, use the “:” character to separate the type and code. For example, 3:4, 1:*. The “*” character can be used to represent any code. The “*” character cannot be used to specify any type, examples such as “*:4” or “*:*” are invalid.
+ICMP types and codes applicable to the firewall rule. To specify all ICMP types and codes, use the “\*” character. For specific ICMP types and codes, use the “:” character to separate the type and code, for example, 3:4, 1:\*. The “\*” character can be used to represent any code. The “\*” character cannot be used to specify any type; examples such as “\*:4” or “\*:\*” are invalid.
 If not specified, the default is All. 
 Value type is string. Supported operations are Add, Get, Replace, and Delete.