diff --git a/administrator/language/en-GB/joomla.ini b/administrator/language/en-GB/joomla.ini
index 19191ae76a94..ab10d9206481 100644
--- a/administrator/language/en-GB/joomla.ini
+++ b/administrator/language/en-GB/joomla.ini
@@ -67,6 +67,7 @@ JCATEGORY_DESC="Category descending"
 JCATEGORY_SPRINTF="Category: %s"
 JCLEAR="Clear"
 JCLIENT="Location"
+JCLOSE="Close"
 JCONFIG_PERMISSIONS_DESC="Permissions for this component unless they are changed for a specific item."
 JCONFIG_PERMISSIONS_LABEL="Permissions"
 JCURRENT="Current"
@@ -101,8 +102,10 @@ JNEXT_TITLE="Next article: %s"
 JNO="No"
 JNONE="None"
 JOFF="Off"
+JOK="OK"
 JON="On"
 JONLY="Only"
+JOPEN="Open"
 JOPTIONS="Options"
 JORDERINGDISABLED="Please sort by order to enable reordering"
 JPREV="Prev"
diff --git a/language/en-GB/joomla.ini b/language/en-GB/joomla.ini
index 47aebb131dc6..820bbefaf11e 100644
--- a/language/en-GB/joomla.ini
+++ b/language/en-GB/joomla.ini
@@ -65,6 +65,7 @@ JCATEGORY="Category"
 JCATEGORY_ASC="Category ascending"
 JCATEGORY_DESC="Category descending"
 JCLEAR="Clear"
+JCLOSE="Close"
 JDATE="Date"
 JDATE_ASC="Date ascending"
 JDATE_DESC="Date descending"
@@ -93,9 +94,11 @@ JNO="No"
 JNONE="None"
 JNOTPUBLISHEDYET="Not published yet"
 JNOTICE="Notice"
+JOK="OK"
 JOFF="Off"
 JOFFLINE_MESSAGE="This site is down for maintenance.<br>Please check back again soon."
 JON="On"
+JOPEN="Open"
 JOPTIONS="Options"
 JPAGETITLE="%1$s - %2$s"
 JPREV="Prev"
diff --git a/layouts/joomla/system/message.php b/layouts/joomla/system/message.php
index a93e8f240d1b..460a215a8005 100644
--- a/layouts/joomla/system/message.php
+++ b/layouts/joomla/system/message.php
@@ -29,9 +29,14 @@
 
 // Load JavaScript message titles
 Text::script('ERROR');
-Text::script('WARNING');
-Text::script('NOTICE');
 Text::script('MESSAGE');
+Text::script('NOTICE');
+Text::script('WARNING');
+
+// Load other Javascript message strings
+Text::script('JCLOSE');
+Text::script('JOK');
+Text::script('JOPEN');
 
 // Alerts progressive enhancement
 Factory::getDocument()->getWebAssetManager()