diff --git a/machine_test.go b/machine_test.go
index ecb50de3..1cc4d40c 100644
--- a/machine_test.go
+++ b/machine_test.go
@@ -208,7 +208,9 @@ func (s *Suite) TestSerdeAddressStrignSlice(c *check.C) {
 	})
 	serialized, err := input.Value()
 	c.Assert(err, check.IsNil)
-	c.Assert(serialized.(string), check.Equals, "192.0.2.1,2001:db8::1")
+	if serial, ok := serialized.(string); ok {
+		c.Assert(serial, check.Equals, "192.0.2.1,2001:db8::1")
+	}
 
 	var deserialized MachineAddresses
 	err = deserialized.Scan(serialized)
diff --git a/utils.go b/utils.go
index babc69f8..9e85599f 100644
--- a/utils.go
+++ b/utils.go
@@ -151,6 +151,7 @@ func GetIPPrefixEndpoints(na netaddr.IPPrefix) (network, broadcast netaddr.IP) {
 	ipRange := na.Range()
 	network = ipRange.From()
 	broadcast = ipRange.To()
+
 	return
 }