diff --git a/roles/container-engine/containerd/templates/config.toml.j2 b/roles/container-engine/containerd/templates/config.toml.j2
index c1bda12b8b4..096dea40ef6 100644
--- a/roles/container-engine/containerd/templates/config.toml.j2
+++ b/roles/container-engine/containerd/templates/config.toml.j2
@@ -57,8 +57,8 @@ oom_score = {{ containerd_oom_score }}
         [plugins."io.containerd.grpc.v1.cri".registry.mirrors."{{ registry }}"]
           endpoint = ["{{ ([ addr ] | flatten ) | join('","') }}"]
 {% endfor %}
-{% for addr in containerd_insecure_registries.values() | flatten | unique %}
-        [plugins."io.containerd.grpc.v1.cri".registry.configs."{{ addr }}".tls]
+{% for registry in containerd_insecure_registries.keys() %}
+        [plugins."io.containerd.grpc.v1.cri".registry.configs."{{ registry }}".tls]
           insecure_skip_verify = true
 {% endfor %}
 {% endif %}