diff --git a/terraform/gcp/single-into-existing-vpc/locals.tf b/terraform/gcp/single-into-existing-vpc/locals.tf
index 02c8cc0c..c5e91fd4 100755
--- a/terraform/gcp/single-into-existing-vpc/locals.tf
+++ b/terraform/gcp/single-into-existing-vpc/locals.tf
@@ -13,6 +13,10 @@ locals {
   // Will fail if the installation type is none of the above
   validate_installation_type = index(local.installation_type_allowed_values, var.installationType)
 
+  regex_valid_sicKey = "^([a-z0-9A-Z]{8,30})$"
+  // Will fail if var.sicKey is invalid
+  regex_sicKey = regex(local.regex_valid_sicKey, var.sicKey) == var.sicKey ? 0 : "Variable [sicKey] must be at least 8 alpha numeric characters."
+
   regex_validate_mgmt_image_name = "check-point-r8[0-1][1-4]0-(byol|payg)-[0-9]{3}-([0-9]{3,}|[a-z]+)-v[0-9]{8,}"
   regex_validate_single_image_name = "check-point-r8[0-1][1-4]0-gw-(byol|payg)-single-[0-9]{3}-([0-9]{3,}|[a-z]+)-v[0-9]{8,}"
   // will fail if the image name is not in the right syntax