diff --git a/lib/internal/Magento/Framework/DB/Adapter/Pdo/Mysql.php b/lib/internal/Magento/Framework/DB/Adapter/Pdo/Mysql.php
index b066bb4db2912..25249b39703be 100644
--- a/lib/internal/Magento/Framework/DB/Adapter/Pdo/Mysql.php
+++ b/lib/internal/Magento/Framework/DB/Adapter/Pdo/Mysql.php
@@ -2422,7 +2422,7 @@ protected function _getColumnDefinition($options, $ddlType = null)
          *  where default value can be quoted already.
          *  We need to avoid "double-quoting" here
          */
-        if ($cDefault !== null && strlen($cDefault)) {
+        if ($cDefault !== null && is_string($cDefault) && strlen($cDefault)) {
             $cDefault = str_replace("'", '', $cDefault);
         }