diff --git a/src/Network/Network/ChangeLog.md b/src/Network/Network/ChangeLog.md
index 4ccee2592458..1add3c5300a6 100644
--- a/src/Network/Network/ChangeLog.md
+++ b/src/Network/Network/ChangeLog.md
@@ -19,6 +19,7 @@
 --->
 
 ## Upcoming Release
+* Fixed a bug that reverts classic fw private ranges to default when doing get & set
 
 ## Version 5.4.0
 * Fixed a bug that does not enable to set Perform SNAT to Always
diff --git a/src/Network/Network/Models/AzureFirewall/PSAzureFirewall.cs b/src/Network/Network/Models/AzureFirewall/PSAzureFirewall.cs
index 2a36fe57ab77..b03576bd7af7 100644
--- a/src/Network/Network/Models/AzureFirewall/PSAzureFirewall.cs
+++ b/src/Network/Network/Models/AzureFirewall/PSAzureFirewall.cs
@@ -66,8 +66,10 @@ public string[] PrivateRange
             set
             {
                 if (value != null)
+                {
                     ValidatePrivateRange(value);
-                privateRange = value;
+                    privateRange = value;
+                }
             }
         }