diff --git a/auth/db/auth.php b/auth/db/auth.php
index 2dcd4aea4f6..03a98f37190 100644
--- a/auth/db/auth.php
+++ b/auth/db/auth.php
@@ -769,12 +769,12 @@ class auth_plugin_db extends auth_plugin_base {
         raise_memory_limit(MEMORY_HUGE);
 
         if (empty($this->config->table)) {
-            echo $OUTPUT->notification('External table not specified.', 'notifyproblem');
+            echo $OUTPUT->notification(get_string('auth_dbnoexttable', 'auth_db'), 'notifyproblem');
             return;
         }
 
         if (empty($this->config->fielduser)) {
-            echo $OUTPUT->notification('External user field not specified.', 'notifyproblem');
+            echo $OUTPUT->notification(get_string('auth_dbnouserfield', 'auth_db'), 'notifyproblem');
             return;
         }
 
@@ -795,7 +795,7 @@ class auth_plugin_db extends auth_plugin_base {
             error_reporting($CFG->debug);
             ob_end_flush();
 
-            echo $OUTPUT->notification('Cannot connect the database.', 'notifyproblem');
+            echo $OUTPUT->notification(get_string('auth_dbcannotconnect', 'auth_db'), 'notifyproblem');
             return;
         }
 
@@ -804,17 +804,17 @@ class auth_plugin_db extends auth_plugin_base {
                                 WHERE {$this->config->fielduser} <> 'random_unlikely_username'"); // Any unlikely name is ok here.
 
         if (!$rs) {
-            echo $OUTPUT->notification('Can not read external table.', 'notifyproblem');
+            echo $OUTPUT->notification(get_string('auth_dbcannotreadtable', 'auth_db'), 'notifyproblem');
 
         } else if ($rs->EOF) {
-            echo $OUTPUT->notification('External table is empty.', 'notifyproblem');
+            echo $OUTPUT->notification(get_string('auth_dbtableempty', 'auth_db'), 'notifyproblem');
             $rs->close();
 
         } else {
             $fields_obj = $rs->FetchObj();
             $columns = array_keys((array)$fields_obj);
 
-            echo $OUTPUT->notification('External table contains following columns:<br />'.implode(', ', $columns), 'notifysuccess');
+            echo $OUTPUT->notification(get_string('auth_dbcolumnlist', 'auth_db', implode(', ', $columns)), 'notifysuccess');
             $rs->close();
         }
 
diff --git a/auth/db/lang/en/auth_db.php b/auth/db/lang/en/auth_db.php
index 1b8ece1f5ce..9f02a299c49 100644
--- a/auth/db/lang/en/auth_db.php
+++ b/auth/db/lang/en/auth_db.php
@@ -69,6 +69,12 @@ $string['auth_dbuser_key'] = 'DB user';
 $string['auth_dbusernotexist'] = 'Cannot update non-existent user: {$a}';
 $string['auth_dbuserstoadd'] = 'User entries to add: {$a}';
 $string['auth_dbuserstoremove'] = 'User entries to remove: {$a}';
+$string['auth_dbnoexttable'] = 'External table not specified.';
+$string['auth_dbnouserfield'] = 'External user field not specified.';
+$string['auth_dbcannotconnect'] = 'Cannot connect to external database.';
+$string['auth_dbcannotreadtable'] = 'Cannot read external table.';
+$string['auth_dbtableempty'] = 'External table is empty.';
+$string['auth_dbcolumnlist'] = 'External table contains the following columns:<br />{$a}';
 $string['pluginname'] = 'External database';
 $string['privacy:metadata'] = 'The External database authentication plugin does not store any personal data.';