diff --git a/mmv1/templates/terraform/post_update/compute_per_instance_config.go.erb b/mmv1/templates/terraform/post_update/compute_per_instance_config.go.erb
index c8cb4fa63445..428da0d7847d 100644
--- a/mmv1/templates/terraform/post_update/compute_per_instance_config.go.erb
+++ b/mmv1/templates/terraform/post_update/compute_per_instance_config.go.erb
@@ -17,7 +17,7 @@ mostDisruptiveAction := d.Get("most_disruptive_allowed_action")
 if isEmptyValue(reflect.ValueOf(mostDisruptiveAction)) {
 	mostDisruptiveAction = "REPLACE"
 }
-obj["mostDisruptiveActionAllowed"] = mostDisruptiveAction
+obj["mostDisruptiveAllowedAction"] = mostDisruptiveAction
 
 url, err = replaceVars(d, config, "{{ComputeBasePath}}projects/{{project}}/zones/{{zone}}/instanceGroupManagers/{{instance_group_manager}}/applyUpdatesToInstances")
 if err != nil {
diff --git a/mmv1/templates/terraform/post_update/compute_region_per_instance_config.go.erb b/mmv1/templates/terraform/post_update/compute_region_per_instance_config.go.erb
index ca477bada808..a203b19a3d52 100644
--- a/mmv1/templates/terraform/post_update/compute_region_per_instance_config.go.erb
+++ b/mmv1/templates/terraform/post_update/compute_region_per_instance_config.go.erb
@@ -17,7 +17,7 @@ mostDisruptiveAction := d.Get("most_disruptive_allowed_action")
 if isEmptyValue(reflect.ValueOf(mostDisruptiveAction)) {
 	mostDisruptiveAction = "REPLACE"
 }
-obj["mostDisruptiveActionAllowed"] = mostDisruptiveAction
+obj["mostDisruptiveAllowedAction"] = mostDisruptiveAction
 
 url, err = replaceVars(d, config, "{{ComputeBasePath}}projects/{{project}}/regions/{{region}}/instanceGroupManagers/{{region_instance_group_manager}}/applyUpdatesToInstances")
 if err != nil {