diff --git a/setup/test/tests/test.validation.php b/setup/test/tests/test.validation.php
index 6323cd1590856e82ef091e7cce983558fd28c91c..27e61af8438a4fc8a75bcb3003013af6ab56801d 100644
--- a/setup/test/tests/test.validation.php
+++ b/setup/test/tests/test.validation.php
@@ -32,6 +32,7 @@ class TestValidation extends Test {
         $this->assert(Validator::is_email('jared.12@domain.tld'));
         $this->assert(Validator::is_email('jared_12@domain.tld'));
         $this->assert(Validator::is_email('jared-12@domain.tld'));
+        $this->assert(Validator::is_email('jared+ost@domain.tld'));
 
         // Illegal or unsupported
         $this->assert(!Validator::is_email('jared r@domain.tld'));