diff --git a/lib/mysql-binuuid/type.rb b/lib/mysql-binuuid/type.rb
index 8273fa6..6dac8f3 100644
--- a/lib/mysql-binuuid/type.rb
+++ b/lib/mysql-binuuid/type.rb
@@ -27,7 +27,8 @@ def cast(value)
     # Invoked when the provided value needs to be serialized before storing
     # it to the database.
     def serialize(value)
-      return if value.nil?
+      return if value.blank?
+
       undashed_uuid = strip_dashes(value)
 
       # To avoid SQL injection, verify that it looks like a UUID. ActiveRecord