diff --git a/tests/IpTest.php b/tests/IpTest.php
index 567652d79f595..638d3a3c55c7d 100644
--- a/tests/IpTest.php
+++ b/tests/IpTest.php
@@ -61,7 +61,7 @@ public function testIsValid(): void
      */
     public function testIsValidIPv6ExcludeReserved(): void
     {
-        $this->assertFalse(IPv6::isValid('2001:db8:85a3::8a2e:370:7334', true));
+        $this->assertFalse(IPv6::isValid('::1', true));
     }
 
     public function testIpParse(): void