diff --git a/rules/Php53/Rector/Variable/ReplaceHttpServerVarsByServerRector.php b/rules/Php53/Rector/Variable/ReplaceHttpServerVarsByServerRector.php
index 5e3eee9798a..d3a80b7f238 100644
--- a/rules/Php53/Rector/Variable/ReplaceHttpServerVarsByServerRector.php
+++ b/rules/Php53/Rector/Variable/ReplaceHttpServerVarsByServerRector.php
@@ -56,15 +56,16 @@ public function getNodeTypes(): array
      */
     public function refactor(Node $node): ?Node
     {
-        foreach (self::VARIABLE_RENAME_MAP as $oldName => $newName) {
-            if (! $this->isName($node, $oldName)) {
-                continue;
-            }
+        $variableName = $this->getName($node);
+        if ($variableName === null) {
+            return null;
+        }
 
-            $node->name = $newName;
-            return $node;
+        if (! isset(self::VARIABLE_RENAME_MAP[$variableName])) {
+            return null;
         }
 
-        return null;
+        $node->name = self::VARIABLE_RENAME_MAP[$variableName];
+        return $node;
     }
 }