diff --git a/services/compute/mgmt/2018-06-01/compute/models.go b/services/compute/mgmt/2018-06-01/compute/models.go
index 4d40eef1888d..67a2af5b59b2 100644
--- a/services/compute/mgmt/2018-06-01/compute/models.go
+++ b/services/compute/mgmt/2018-06-01/compute/models.go
@@ -5982,6 +5982,8 @@ type VirtualMachineScaleSetPublicIPAddressConfigurationProperties struct {
 	DNSSettings *VirtualMachineScaleSetPublicIPAddressConfigurationDNSSettings `json:"dnsSettings,omitempty"`
 	// IPTags - The list of IP tags associated with the public IP address.
 	IPTags *[]VirtualMachineScaleSetIPTag `json:"ipTags,omitempty"`
+	// PublicIPPrefix - The PublicIPPrefix from which to allocate publicIP addresses.
+	PublicIPPrefix *SubResource `json:"publicIPPrefix,omitempty"`
 }
 
 // VirtualMachineScaleSetRollingUpgradesCancelFuture an abstraction for monitoring and retrieving the results of a