diff --git a/test/unit/contact_test.rb b/test/unit/contact_test.rb
index d70267b..1e01290 100644
--- a/test/unit/contact_test.rb
+++ b/test/unit/contact_test.rb
@@ -22,7 +22,7 @@ class ContactTest < ActiveSupport::TestCase
   should 'validates format of email only if not empty' do
     contact = Contact.new
     contact.valid?
-    assert_equal "Email can't be blank", contact.errors[:email]
+    assert_match /^.* can't be blank$/, contact.errors[:email]
   end
 
   should 'inicialize fields on instanciate' do
--
libgit2 0.21.2