diff --git a/sql.go b/sql.go
index 929c384..5911398 100644
--- a/sql.go
+++ b/sql.go
@@ -64,5 +64,9 @@ func (uuid *UUID) Scan(src interface{}) error {
 // transparently. Currently, UUIDs map to strings. Please consult
 // database-specific driver documentation for matching types.
 func (uuid UUID) Value() (driver.Value, error) {
+	if uuid == nil {
+		return nil, nil
+	}
+
 	return uuid.String(), nil
 }