diff --git a/src/Websites/Websites/Cmdlets/Certificates/NewAzureWebAppCertificate.cs b/src/Websites/Websites/Cmdlets/Certificates/NewAzureWebAppCertificate.cs
index 3fba3d4852ca..0e9398c06c43 100644
--- a/src/Websites/Websites/Cmdlets/Certificates/NewAzureWebAppCertificate.cs
+++ b/src/Websites/Websites/Cmdlets/Certificates/NewAzureWebAppCertificate.cs
@@ -59,7 +59,7 @@ public class NewAzureWebAppCertificate : WebAppBaseClientCmdLet
         [ValidateNotNullOrEmpty]
         public string Slot { get; set; }
 
-        [Parameter(ParameterSetName = ParameterSet1Name, Position = 3, Mandatory = true, HelpMessage = "Custom hostnames associated with web app/slot.")]
+        [Parameter(ParameterSetName = ParameterSet1Name, Position = 3, Mandatory = true, HelpMessage = "Custom hostname associated with web app/slot.")]
         [ValidateNotNullOrEmpty]
         public string HostName { get; set; }
 
diff --git a/src/Websites/Websites/help/New-AzWebAppCertificate.md b/src/Websites/Websites/help/New-AzWebAppCertificate.md
index a365e0bb30dc..59d5458e8508 100644
--- a/src/Websites/Websites/help/New-AzWebAppCertificate.md
+++ b/src/Websites/Websites/help/New-AzWebAppCertificate.md
@@ -77,7 +77,7 @@ Accept wildcard characters: False
 ```
 
 ### -HostName
-Custom hostnames associated with web app/slot.
+Custom hostname associated with web app/slot.
 
 ```yaml
 Type: System.String