diff --git a/modules/acm/README.md b/modules/acm/README.md
index 1d97e6abc9..cd2a0d54c7 100644
--- a/modules/acm/README.md
+++ b/modules/acm/README.md
@@ -78,7 +78,7 @@ data "google_client_config" "default" {}
 | https\_proxy | URL for the HTTPS proxy to be used when communicating with the Git repo. | `string` | `null` | no |
 | install\_template\_library | Whether to install the default Policy Controller template library | `bool` | `true` | no |
 | location | GCP location used to reach cluster. | `string` | n/a | yes |
-| policy\_bundles | A space separated list of Policy Controller policy bundles urls to install on the cluster. | `string` | `null` | no |
+| policy\_bundles | A space separated list of Policy Controller policy bundles git urls (example: https://github.com/GoogleCloudPlatform/acm-policy-controller-library.git/bundles/policy-essentials-v2022) to install on the cluster. | `string` | `null` | no |
 | policy\_dir | Subfolder containing configs in ACM Git repo. If un-set, uses Config Management default. | `string` | `""` | no |
 | project\_id | GCP project\_id used to reach cluster. | `string` | n/a | yes |
 | secret\_type | git authentication secret type, is passed through to ConfigManagement spec.git.secretType. Overriden to value 'ssh' if `create_ssh_key` is true | `string` | `"ssh"` | no |
diff --git a/modules/acm/variables.tf b/modules/acm/variables.tf
index 545d368b9d..595ee6047b 100644
--- a/modules/acm/variables.tf
+++ b/modules/acm/variables.tf
@@ -148,7 +148,7 @@ variable "enable_referential_rules" {
 }
 
 variable "policy_bundles" {
-  description = "A space separated list of Policy Controller policy bundles urls to install on the cluster."
+  description = "A space separated list of Policy Controller policy bundles git urls (example: https://github.com/GoogleCloudPlatform/acm-policy-controller-library.git/bundles/policy-essentials-v2022) to install on the cluster."
   type        = string
   default     = null
 }