diff --git a/src/Compute/Compute/ChangeLog.md b/src/Compute/Compute/ChangeLog.md
index a6e39e8c3ad3..dacddd90c03a 100644
--- a/src/Compute/Compute/ChangeLog.md
+++ b/src/Compute/Compute/ChangeLog.md
@@ -22,6 +22,7 @@
 ## Upcoming Release
 * Added parameters `-EnableCrossZoneUpgrade` and `-PrioritizeUnhealthyInstance` to the `Set-AzVmssRollingUpgradePolicy`  
 * Added `AssessmentMode` parameter to the `Set-AzVMOperatingSystem` cmdlet.
+* Fixed a bug in `Add-AzVmssNetworkInterfaceConfiguration`
 
 ## Version 4.14.0
 * Updated Compute module to use the latest .Net SDK version 47.0.0.
diff --git a/src/Compute/Compute/Generated/VirtualMachineScaleSet/Config/AddAzureRmVmssNetworkInterfaceConfigurationCommand.cs b/src/Compute/Compute/Generated/VirtualMachineScaleSet/Config/AddAzureRmVmssNetworkInterfaceConfigurationCommand.cs
index 79b6344667f4..1275c8f42f23 100644
--- a/src/Compute/Compute/Generated/VirtualMachineScaleSet/Config/AddAzureRmVmssNetworkInterfaceConfigurationCommand.cs
+++ b/src/Compute/Compute/Generated/VirtualMachineScaleSet/Config/AddAzureRmVmssNetworkInterfaceConfigurationCommand.cs
@@ -115,13 +115,6 @@ private void Run()
             {
                 this.VirtualMachineScaleSet.VirtualMachineProfile.NetworkProfile.NetworkApiVersion = this.NetworkApiVersion;
             }
-            else
-            {
-                // If networkApiVersion is not specified, reuse the existing one in network profile if not null,
-                // else use default version
-                this.VirtualMachineScaleSet.VirtualMachineProfile.NetworkProfile.NetworkApiVersion = this.VirtualMachineScaleSet.VirtualMachineProfile.NetworkProfile.NetworkApiVersion
-                    ?? Microsoft.Azure.Management.Compute.Models.NetworkApiVersion.TwoZeroTwoZeroHyphenMinusOneOneHyphenMinusZeroOne;
-            }
 
             // NetworkInterfaceConfigurations
             if (this.VirtualMachineScaleSet.VirtualMachineProfile.NetworkProfile.NetworkInterfaceConfigurations == null)