diff --git a/uuid_test.go b/uuid_test.go
index beb336d..fa40280 100644
--- a/uuid_test.go
+++ b/uuid_test.go
@@ -23,6 +23,7 @@ package uuid
 
 import (
 	"bytes"
+	"fmt"
 	"testing"
 
 	. "gopkg.in/check.v1"
@@ -88,3 +89,12 @@ func (s *testSuite) TestSetVariant(c *C) {
 	u.SetVariant(VariantFuture)
 	c.Assert(u.Variant(), Equals, VariantFuture)
 }
+
+func (s *testSuite) TestMust(c *C) {
+	defer func() {
+		c.Assert(recover(), NotNil)
+	}()
+	Must(func() (UUID, error) {
+		return Nil, fmt.Errorf("uuid: expected error")
+	}())
+}