diff --git a/azurerm/resource_arm_virtual_machine_scale_set.go b/azurerm/resource_arm_virtual_machine_scale_set.go
index 872200d932da3..1e8079fc35ffd 100644
--- a/azurerm/resource_arm_virtual_machine_scale_set.go
+++ b/azurerm/resource_arm_virtual_machine_scale_set.go
@@ -303,7 +303,7 @@ func resourceArmVirtualMachineScaleSet() *schema.Resource {
 						},
 
 						"dns_settings": {
-							Type:     schema.TypeSet,
+							Type:     schema.TypeList,
 							Optional: true,
 							MaxItems: 1,
 							Elem: &schema.Resource{
@@ -1050,16 +1050,16 @@ func flattenAzureRmVirtualMachineScaleSetNetworkProfile(profile *compute.Virtual
 		}
 
 		if netConfig.VirtualMachineScaleSetNetworkConfigurationProperties.DNSSettings != nil {
-			dnsSettings := make(map[string]interface{})
-			dnsServers := make([]interface{}, 0)
+			dnsSetting := make(map[string]interface{})
+			dnsServers := make([]string, 0, len(*netConfig.VirtualMachineScaleSetNetworkConfigurationProperties.DNSSettings.DNSServers))
 			if netConfig.VirtualMachineScaleSetNetworkConfigurationProperties.DNSSettings.DNSServers != nil {
 				for _, dnsServer := range *netConfig.VirtualMachineScaleSetNetworkConfigurationProperties.DNSSettings.DNSServers {
 					dnsServers = append(dnsServers, dnsServer)
 				}
-				dnsSettings["dns_servers"] = dnsServers
+				dnsSetting["dns_servers"] = dnsServers
 			}
 
-			s["dns_settings"] = dnsSettings
+			s["dns_settings"] = []interface{}{dnsSetting}
 		}
 
 		if netConfig.VirtualMachineScaleSetNetworkConfigurationProperties.IPConfigurations != nil {
@@ -1418,7 +1418,7 @@ func expandAzureRmVirtualMachineScaleSetNetworkProfile(d *schema.ResourceData) *
 		acceleratedNetworking := config["accelerated_networking"].(bool)
 		ipForwarding := config["ip_forwarding"].(bool)
 
-		dnsSettingsConfigs := config["dns_settings"].(*schema.Set).List()
+		dnsSettingsConfigs := config["dns_settings"].([]interface{})
 		dnsSettings := compute.VirtualMachineScaleSetNetworkConfigurationDNSSettings{}
 		for _, dnsSettingsConfig := range dnsSettingsConfigs {
 			dns_settings := dnsSettingsConfig.(map[string]interface{})
diff --git a/azurerm/resource_arm_virtual_machine_scale_set_test.go b/azurerm/resource_arm_virtual_machine_scale_set_test.go
index 34ac72c71cbb2..fa4fef71e4160 100644
--- a/azurerm/resource_arm_virtual_machine_scale_set_test.go
+++ b/azurerm/resource_arm_virtual_machine_scale_set_test.go
@@ -27,7 +27,6 @@ func TestAccAzureRMVirtualMachineScaleSet_basic(t *testing.T) {
 					testCheckAzureRMVirtualMachineScaleSetExists(resourceName),
 					// testing default scaleset values
 					testCheckAzureRMVirtualMachineScaleSetSinglePlacementGroup(resourceName, true),
-					resource.TestCheckResourceAttr(resourceName, "ip_forwarding", "false"),
 				),
 			},
 		},
@@ -78,6 +77,9 @@ func TestAccAzureRMVirtualMachineScaleSet_basicAcceleratedNetworking(t *testing.
 func TestAccAzureRMVirtualMachineScaleSet_basicIPForwarding(t *testing.T) {
 	resourceName := "azurerm_virtual_machine_scale_set.test"
 	ri := acctest.RandInt()
+	networkProfileName := fmt.Sprintf("TestNetworkProfile-%d", ri)
+	networkProfile := map[string]interface{}{"name": networkProfileName, "primary": true}
+	networkProfileHash := fmt.Sprintf("%d", resourceArmVirtualMachineScaleSetNetworkConfigurationHash(networkProfile))
 	config := testAccAzureRMVirtualMachineScaleSet_basicIPForwarding(ri, testLocation())
 	resource.Test(t, resource.TestCase{
 		PreCheck:     func() { testAccPreCheck(t) },
@@ -88,7 +90,7 @@ func TestAccAzureRMVirtualMachineScaleSet_basicIPForwarding(t *testing.T) {
 				Config: config,
 				Check: resource.ComposeTestCheckFunc(
 					testCheckAzureRMVirtualMachineScaleSetExists(resourceName),
-					resource.TestCheckResourceAttr(resourceName, "ip_forwarding", "true"),
+					resource.TestCheckResourceAttr(resourceName, "network_profile."+networkProfileHash+".ip_forwarding", "true"),
 				),
 			},
 		},
@@ -98,6 +100,9 @@ func TestAccAzureRMVirtualMachineScaleSet_basicIPForwarding(t *testing.T) {
 func TestAccAzureRMVirtualMachineScaleSet_basicDNSSettings(t *testing.T) {
 	resourceName := "azurerm_virtual_machine_scale_set.test"
 	ri := acctest.RandInt()
+	networkProfileName := fmt.Sprintf("TestNetworkProfile-%d", ri)
+	networkProfile := map[string]interface{}{"name": networkProfileName, "primary": true}
+	networkProfileHash := fmt.Sprintf("%d", resourceArmVirtualMachineScaleSetNetworkConfigurationHash(networkProfile))
 	config := testAccAzureRMVirtualMachineScaleSet_basicDNSSettings(ri, testLocation())
 	resource.Test(t, resource.TestCase{
 		PreCheck:     func() { testAccPreCheck(t) },
@@ -108,8 +113,8 @@ func TestAccAzureRMVirtualMachineScaleSet_basicDNSSettings(t *testing.T) {
 				Config: config,
 				Check: resource.ComposeTestCheckFunc(
 					testCheckAzureRMVirtualMachineScaleSetExists(resourceName),
-					resource.TestCheckResourceAttr(resourceName, "dns_settings.0.dns_servers.0", "8.8.8.8"),
-					resource.TestCheckResourceAttr(resourceName, "dns_settings.0.dns_servers.1", "8.8.4.4"),
+					resource.TestCheckResourceAttr(resourceName, "network_profile."+networkProfileHash+".dns_settings.0.dns_servers.0", "8.8.8.8"),
+					resource.TestCheckResourceAttr(resourceName, "network_profile."+networkProfileHash+".dns_settings.0.dns_servers.1", "8.8.4.4"),
 				),
 			},
 		},