diff --git a/app/code/Magento/Customer/Block/Widget/Name.php b/app/code/Magento/Customer/Block/Widget/Name.php
index 6f1b051af7465..9ad60622072e7 100644
--- a/app/code/Magento/Customer/Block/Widget/Name.php
+++ b/app/code/Magento/Customer/Block/Widget/Name.php
@@ -106,7 +106,7 @@ public function getPrefixOptions()
         $prefixOptions = $this->options->getNamePrefixOptions();
 
         if ($this->getObject() && !empty($prefixOptions)) {
-            $prefixOption = $this->getObject()->getPrefix();
+            $prefixOption = $this->getObject()->getPrefix() ?? '';
             $oldPrefix = $this->escapeHtml(trim($prefixOption));
             if ($prefixOption !== null && !isset($prefixOptions[$oldPrefix]) && !isset($prefixOptions[$prefixOption])) {
                 $prefixOptions[$oldPrefix] = $oldPrefix;