diff --git a/lib/valid_email2/email_validator.rb b/lib/valid_email2/email_validator.rb
index d96e772..812f328 100644
--- a/lib/valid_email2/email_validator.rb
+++ b/lib/valid_email2/email_validator.rb
@@ -57,12 +57,12 @@ def sanitized_values(input)
       options = default_options.merge(self.options)
 
       if options[:multiple]
-        email_list = input.is_a?(Array) ? input : input.split(',')
+        email_list = input.is_a?(Array) ? input : input.split(',').map(&:strip)
       else
         email_list = [input]
       end
 
-      email_list.reject(&:empty?).map(&:strip)
+      email_list.reject(&:empty?)
     end
 
     def error(record, attribute)
diff --git a/spec/valid_email2_spec.rb b/spec/valid_email2_spec.rb
index c1c1a3a..58b8543 100644
--- a/spec/valid_email2_spec.rb
+++ b/spec/valid_email2_spec.rb
@@ -158,6 +158,11 @@ class TestUserMultiple < TestModel
       user = TestUser.new(email: "foo@gmail-.com")
       expect(user.valid?).to be_falsy
     end
+
+    it "is invalid with trailing whitespace" do
+      user = TestUser.new(email: "foo@example.com ")
+      expect(user.valid?).to be_falsey
+    end
   end
 
   describe "with disposable validation" do