diff --git a/core/modules/locale/src/StringDatabaseStorage.php b/core/modules/locale/src/StringDatabaseStorage.php
index 058c689..ff45957 100644
--- a/core/modules/locale/src/StringDatabaseStorage.php
+++ b/core/modules/locale/src/StringDatabaseStorage.php
@@ -2,6 +2,7 @@
 
 namespace Drupal\locale;
 
+use Drupal\Component\Utility\Unicode;
 use Drupal\Core\Database\Connection;
 
 /**
@@ -462,6 +463,14 @@ protected function dbStringSelect(array $conditions, array $options = array()) {
    *   If the string is not suitable for this storage, an exception is thrown.
    */
   protected function dbStringInsert($string) {
+    // Issue #1885192: Field locales_source.source is not suitable for long
+    // texts and huge config objects.
+    //
+    // Work-around: Don't save strings that are greater the 64kb.
+    if (Unicode::strlen($string->getString()) > 64000) {
+      $string->setString('');
+    }
+
     if ($string->isSource()) {
       $string->setValues(array('context' => '', 'version' => 'none'), FALSE);
       $fields = $string->getValues(array('source', 'context', 'version'));