diff --git a/products/compute/terraform.yaml b/products/compute/terraform.yaml
index 779c06ee5ee5..491db2395794 100644
--- a/products/compute/terraform.yaml
+++ b/products/compute/terraform.yaml
@@ -918,7 +918,6 @@ overrides: !ruby/object:Overrides::ResourceOverrides
     custom_code: !ruby/object:Provider::Terraform::CustomCode
       post_create: templates/terraform/post_create/compute_network_delete_default_route.erb
       extra_schema_entry: templates/terraform/extra_schema_entry/network.erb
-      encoder: templates/terraform/encoders/network.erb
   NetworkEndpoint: !ruby/object:Overrides::Terraform::ResourceOverride
     id_format: "{{project}}/{{zone}}/{{network_endpoint_group}}/{{instance}}/{{ip_address}}/{{port}}"
     mutex: networkEndpoint/{{project}}/{{zone}}/{{network_endpoint_group}}
diff --git a/templates/terraform/encoders/network.erb b/templates/terraform/encoders/network.erb
deleted file mode 100644
index e5e725c1ed67..000000000000
--- a/templates/terraform/encoders/network.erb
+++ /dev/null
@@ -1,5 +0,0 @@
-if _, ok := d.GetOk("ipv4_range"); !ok {
-	obj["autoCreateSubnetworks"] = d.Get("auto_create_subnetworks")
-}
-
-return obj, nil
diff --git a/templates/terraform/extra_schema_entry/network.erb b/templates/terraform/extra_schema_entry/network.erb
index b69aa20b0079..a47523c01cca 100644
--- a/templates/terraform/extra_schema_entry/network.erb
+++ b/templates/terraform/extra_schema_entry/network.erb
@@ -14,6 +14,6 @@
 -%>
 "ipv4_range": {
 	Type:       schema.TypeString,
-	Optional:   true,
+	Computed:   true,
 	Removed:    "Legacy Networks are deprecated and you will no longer be able to create them using this field from Feb 1, 2020 onwards.",
 },
\ No newline at end of file
diff --git a/third_party/terraform/website/docs/version_3_upgrade.html.markdown b/third_party/terraform/website/docs/version_3_upgrade.html.markdown
index 767b6250930a..7a8e35debfbf 100644
--- a/third_party/terraform/website/docs/version_3_upgrade.html.markdown
+++ b/third_party/terraform/website/docs/version_3_upgrade.html.markdown
@@ -134,7 +134,7 @@ Use `location` instead.
 
 ### `ipv4_range` is now removed
 
-Legacy Networks are deprecated and you will no longer be able to create them
+Legacy Networks are removed and you will no longer be able to create them
 using this field from Feb 1, 2020 onwards.
 
 ## Resource: `google_compute_network_peering`