diff --git a/CICD/heat/gc_HOT.yaml b/CICD/heat/gc_HOT.yaml
index bc617dd7fc8d2a92277e0e319c83a46491fe014a..4b280f49d49d2693ff5400e13d4dafc395a7ab74 100644
--- a/CICD/heat/gc_HOT.yaml
+++ b/CICD/heat/gc_HOT.yaml
@@ -68,7 +68,7 @@ resources:
      rules: [ { protocol: tcp,
                port_range_min: 3306,
                port_range_max: 3306,
-               remote_group_id: null} ]
+               remote_group_id: ""} ]
   SSHMonashSecGroup:
    type: "OS::Neutron::SecurityGroup"
    properties: