diff --git a/x-pack/legacy/plugins/index_lifecycle_management/public/sections/edit_policy/edit_policy.js b/x-pack/legacy/plugins/index_lifecycle_management/public/sections/edit_policy/edit_policy.js
index 5cf5c47ec6ac3..2b07e9615030f 100644
--- a/x-pack/legacy/plugins/index_lifecycle_management/public/sections/edit_policy/edit_policy.js
+++ b/x-pack/legacy/plugins/index_lifecycle_management/public/sections/edit_policy/edit_policy.js
@@ -111,7 +111,7 @@ export class EditPolicy extends Component {
     if (firstError) {
       toastNotifications.addDanger(
         i18n.translate('xpack.indexLifecycleMgmt.editPolicy.formErrorsMessage', {
-          defaultMessage: 'Please fix the  errors on this page.'
+          defaultMessage: 'Please fix the errors on this page.'
         })
       );
       const errorRowId = `${firstError.replace('.', '-')}-row`;
diff --git a/x-pack/legacy/plugins/index_lifecycle_management/public/store/selectors/policies.js b/x-pack/legacy/plugins/index_lifecycle_management/public/store/selectors/policies.js
index 2a824471586f2..e01f94c326ff3 100644
--- a/x-pack/legacy/plugins/index_lifecycle_management/public/store/selectors/policies.js
+++ b/x-pack/legacy/plugins/index_lifecycle_management/public/store/selectors/policies.js
@@ -239,6 +239,13 @@ export const phaseToES = (phase, originalEsPhase) => {
     esPhase.min_age = `${phase[PHASE_ROLLOVER_MINIMUM_AGE]}${phase[PHASE_ROLLOVER_MINIMUM_AGE_UNITS]}`;
   }
 
+  // If warm phase on rollover is enabled, delete min age field
+  // An index lifecycle switches to warm phase when rollover occurs, so you cannot specify a warm phase time
+  // They are mutually exclusive
+  if (phase[WARM_PHASE_ON_ROLLOVER]) {
+    delete esPhase.min_age;
+  }
+
   esPhase.actions = esPhase.actions || {};
 
   if (phase[PHASE_ROLLOVER_ENABLED]) {