diff --git a/src/Tools/Analyzer/Phpcpd.php b/src/Tools/Analyzer/Phpcpd.php
index ed4e87ce..d71648a3 100644
--- a/src/Tools/Analyzer/Phpcpd.php
+++ b/src/Tools/Analyzer/Phpcpd.php
@@ -20,6 +20,15 @@ public function __invoke()
             'min-lines' => $this->config->value('phpcpd.minLines'),
             'min-tokens' => $this->config->value('phpcpd.minTokens'),
         );
+        $phpcpdNames = array_map(
+            function ($extension) {
+                return "*.{$extension}";
+            },
+            array_filter(explode(',', $this->config->csv('phpqa.extensions')))
+        );
+        if ($phpcpdNames) {
+            $args['names'] = \Edge\QA\escapePath(implode(',', $phpcpdNames));
+        }
         if ($this->options->isSavedToFiles) {
             $args['log-pmd'] = $this->tool->getEscapedXmlFile();
         }