diff --git a/builtin/providers/azurerm/resource_arm_virtual_machine_test.go b/builtin/providers/azurerm/resource_arm_virtual_machine_test.go
index 2aac43518..21efd7dbe 100644
--- a/builtin/providers/azurerm/resource_arm_virtual_machine_test.go
+++ b/builtin/providers/azurerm/resource_arm_virtual_machine_test.go
@@ -786,7 +786,7 @@ func testLookupAzureRMVirtualMachineManagedDiskID(vm *compute.VirtualMachine, di
 			}
 		}
 
-		return fmt.Errorf("Unable to locate disk %s on vm %s", diskName, vm.Name)
+		return fmt.Errorf("Unable to locate disk %s on vm %s", diskName, *vm.Name)
 	}
 }