diff --git a/assets/js/src/settings/premium_tab/messages/mss_messages.jsx b/assets/js/src/settings/premium_tab/messages/mss_messages.jsx
index e3b688c30f..5aba5c2723 100644
--- a/assets/js/src/settings/premium_tab/messages/mss_messages.jsx
+++ b/assets/js/src/settings/premium_tab/messages/mss_messages.jsx
@@ -16,7 +16,7 @@ const activeMessage = () => (
 
 const notValidMessage = (message) => (
   <div className="mailpoet_error">
-    {message}
+    {message || MailPoet.I18n.t('premiumTabMssKeyNotValidMessage')}
   </div>
 );
 
@@ -38,7 +38,7 @@ const MssMessages = (props) => {
     case MssStatus.KEY_VALID_MSS_NOT_ACTIVE:
       return mssNotActiveMessage(props.activationCallback);
     case MssStatus.KEY_INVALID:
-      return props.keyMessage ? notValidMessage(props.keyMessage) : null;
+      return notValidMessage(props.keyMessage);
     default:
       return null;
   }
diff --git a/assets/js/src/settings/premium_tab/messages/premium_messages.jsx b/assets/js/src/settings/premium_tab/messages/premium_messages.jsx
index b807b9ed47..0bce916760 100644
--- a/assets/js/src/settings/premium_tab/messages/premium_messages.jsx
+++ b/assets/js/src/settings/premium_tab/messages/premium_messages.jsx
@@ -52,7 +52,7 @@ const premiumNotActiveMessage = (activationCallback) => (
 
 const notValidMessage = (message) => (
   <div className="mailpoet_error">
-    {message}
+    {message || MailPoet.I18n.t('premiumTabPremiumKeyNotValidMessage')}
   </div>
 );
 
@@ -69,7 +69,7 @@ const getMessageFromStatus = (status, message, installationCallback, activationC
     case PremiumStatus.KEY_VALID_PREMIUM_PLUGIN_BEING_ACTIVATED:
       return activatingMessage();
     case PremiumStatus.KEY_INVALID:
-      return message ? notValidMessage(message) : null;
+      return notValidMessage(message);
     default:
       return null;
   }
diff --git a/views/settings.html b/views/settings.html
index c930639ad7..02cb72e280 100644
--- a/views/settings.html
+++ b/views/settings.html
@@ -315,8 +315,10 @@
     'premiumTabPremiumInstallationActivatingMessage': __('activating MailPoet Premium…', 'mailpoet'),
     'premiumTabPremiumInstallationActiveMessage': __('MailPoet Premium is active!', 'mailpoet'),
     'premiumTabPremiumInstallationErrorMessage': __('Something went wrong. Please [link]download the Premium plugin from your account[/link] and [link]contact our support team[/link].', 'mailpoet'),
+    'premiumTabPremiumKeyNotValidMessage': __('Your key is not valid for MailPoet Premium', 'mailpoet'),
     'premiumTabMssActiveMessage': __('MailPoet Sending Service is active', 'mailpoet'),
     'premiumTabMssNotActiveMessage': __('MailPoet Sending Service is not active.', 'mailpoet'),
     'premiumTabMssActivateMessage': __('Activate MailPoet Sending Service', 'mailpoet'),
+    'premiumTabMssKeyNotValidMessage': __('Your key is not valid for the MailPoet Sending Service', 'mailpoet'),
   }) %>
 <% endblock %>