diff --git a/lib/platform/github/index.js b/lib/platform/github/index.js
index 58a3e2b5f743d1e4f5342af1cdb7553388974514..80d3ec7d81e5c0742d372e371998220bc70da2cc 100644
--- a/lib/platform/github/index.js
+++ b/lib/platform/github/index.js
@@ -333,6 +333,7 @@ async function getFileList(branchName = config.baseBranch) {
       .filter(item => item.type === 'blob' && item.mode !== '120000')
       .map(item => item.path)
       .sort();
+    logger.debug(`Retrieved fileList with length ${config.fileList.length}`);
   } catch (err) /* istanbul ignore next */ {
     if (err.statusCode === 409) {
       logger.debug('Repository is not initiated');
diff --git a/lib/platform/gitlab/index.js b/lib/platform/gitlab/index.js
index b5c3c2c4c3fffa21485255f66056b63296064208..458b4e9f3b6b94599d61c06897f3b093ac084c0e 100644
--- a/lib/platform/gitlab/index.js
+++ b/lib/platform/gitlab/index.js
@@ -134,6 +134,7 @@ async function getFileList(branchName = config.baseBranch) {
       .filter(item => item.type === 'blob' && item.mode !== '120000')
       .map(item => item.path)
       .sort();
+    logger.debug(`Retrieved fileList with length ${config.fileList.length}`);
   } catch (err) {
     logger.info('Error retrieving git tree - no files detected');
     config.fileList = [];