diff --git a/azurerm/resource_arm_network_security_group.go b/azurerm/resource_arm_network_security_group.go
index 59983801e3f5..750b75471089 100644
--- a/azurerm/resource_arm_network_security_group.go
+++ b/azurerm/resource_arm_network_security_group.go
@@ -139,6 +139,9 @@ func resourceArmNetworkSecurityGroupCreate(d *schema.ResourceData, meta interfac
 		return fmt.Errorf("Error Building list of Network Security Group Rules: %s", sgErr)
 	}
 
+	azureRMLockByName(name, networkSecurityGroupResourceName)
+	defer azureRMUnlockByName(name, networkSecurityGroupResourceName)
+
 	sg := network.SecurityGroup{
 		Name:     &name,
 		Location: &location,
diff --git a/azurerm/resource_arm_virtual_network.go b/azurerm/resource_arm_virtual_network.go
index a07ab74d573f..d76c7af96f1b 100644
--- a/azurerm/resource_arm_virtual_network.go
+++ b/azurerm/resource_arm_virtual_network.go
@@ -116,8 +116,8 @@ func resourceArmVirtualNetworkCreate(d *schema.ResourceData, meta interface{}) e
 		}
 	}
 
-	azureRMLockMultipleByName(&networkSecurityGroupNames, virtualNetworkResourceName)
-	defer azureRMUnlockMultipleByName(&networkSecurityGroupNames, virtualNetworkResourceName)
+	azureRMLockMultipleByName(&networkSecurityGroupNames, networkSecurityGroupResourceName)
+	defer azureRMUnlockMultipleByName(&networkSecurityGroupNames, networkSecurityGroupResourceName)
 
 	_, error := vnetClient.CreateOrUpdate(resGroup, name, vnet, make(chan struct{}))
 	err := <-error