diff --git a/README.md b/README.md
index 8acc027..b234f97 100644
--- a/README.md
+++ b/README.md
@@ -37,7 +37,7 @@ Truefoundry Google Cloud Network Module
 | <a name="input_enable_flow_logs"></a> [enable\_flow\_logs](#input\_enable\_flow\_logs) | Enable flow logs for subnets | `bool` | `false` | no |
 | <a name="input_enable_private_access"></a> [enable\_private\_access](#input\_enable\_private\_access) | Private access for subnets | `bool` | `true` | no |
 | <a name="input_network_name"></a> [network\_name](#input\_network\_name) | SHIM: network name. Should be supplied if shim is true. | `string` | `""` | no |
-| <a name="input_network_vpc_secondary_ranges"></a> [network\_vpc\_secondary\_ranges](#input\_network\_vpc\_secondary\_ranges) | List of secondary ranges | <pre>list(object({<br/>    range_name    = string<br/>    ip_cidr_range = string<br/>  }))</pre> | n/a | yes |
+| <a name="input_network_vpc_secondary_ranges"></a> [network\_vpc\_secondary\_ranges](#input\_network\_vpc\_secondary\_ranges) | List of secondary ranges | <pre>list(object({<br/>    range_name    = string<br/>    ip_cidr_range = string<br/>  }))</pre> | `[]` | no |
 | <a name="input_private_subnet_cidr"></a> [private\_subnet\_cidr](#input\_private\_subnet\_cidr) | CIDR range for private subnet | `string` | `""` | no |
 | <a name="input_project_id"></a> [project\_id](#input\_project\_id) | Project ID in which clusters are deployed | `string` | n/a | yes |
 | <a name="input_region"></a> [region](#input\_region) | Region to deploy your cluster in | `string` | n/a | yes |
diff --git a/variables.tf b/variables.tf
index f7a0292..f0e712d 100644
--- a/variables.tf
+++ b/variables.tf
@@ -91,6 +91,7 @@ variable "network_vpc_secondary_ranges" {
     range_name    = string
     ip_cidr_range = string
   }))
+  default = []
 }
 
 variable "enable_private_access" {