diff --git a/tests/test_ec2/test_security_groups.py b/tests/test_ec2/test_security_groups.py
index ac9f39b57..7e936b7a5 100644
--- a/tests/test_ec2/test_security_groups.py
+++ b/tests/test_ec2/test_security_groups.py
@@ -132,6 +132,7 @@ def test_create_two_security_groups_in_vpc_with_ipv6_enabled():
         GroupName="sg01", Description="Test security group sg01", VpcId=vpc.id
     )
 
+    # The security group must have two defaul egress rules (one for ipv4 and aonther for ipv6)
     security_group.ip_permissions_egress.should.have.length_of(2)