diff --git a/lib/workers/repository/extract/manager-files.js b/lib/workers/repository/extract/manager-files.js
index 787b2079f82b7a145b329e8552b26b78f0622972..caed55117de2791d465a059ed6222dc0f9689109 100644
--- a/lib/workers/repository/extract/manager-files.js
+++ b/lib/workers/repository/extract/manager-files.js
@@ -37,7 +37,7 @@ async function getManagerPackageFiles(config, managerConfig) {
   const matchedFiles = getMatchingFiles(
     fileList,
     manager,
-    config[manager].fileMatch
+    managerConfig.fileMatch
   );
   // istanbul ignore else
   if (matchedFiles.length) {