diff --git a/src/backuptask.js b/src/backuptask.js
index 010b797c2..f615afba7 100644
--- a/src/backuptask.js
+++ b/src/backuptask.js
@@ -893,7 +893,7 @@ async function uploadAppSnapshot(backupConfig, app, progressCallback) {
 
     await snapshotApp(app, progressCallback);
 
-    const remotePath = util.format('snapshot/app_%s', app.id);
+    const remotePath = `snapshot/app_${app.id}`;
     const appDataDir = safe.fs.realpathSync(path.join(paths.APPS_DATA_DIR, app.id));
     if (!appDataDir) throw new BoxError(BoxError.FS_ERROR, `Error resolving appsdata: ${safe.error.message}`);
 
@@ -912,7 +912,7 @@ async function uploadAppSnapshot(backupConfig, app, progressCallback) {
 
     await runBackupUploadAsync(uploadConfig, progressCallback);
 
-    debug(`uploadAppSnapshot: ${app.fqdn} upload to ${remotePath}. ${(new Date() - startTime)/1000} seconds`);
+    debug(`uploadAppSnapshot: ${app.fqdn} uploaded to ${remotePath}. ${(new Date() - startTime)/1000} seconds`);
 
     await backups.setSnapshotInfo(app.id, { timestamp: new Date().toISOString(), manifest: app.manifest, format: backupConfig.format });
 }
diff --git a/src/syncer.js b/src/syncer.js
index ce9e07a31..03fde6c3b 100644
--- a/src/syncer.js
+++ b/src/syncer.js
@@ -155,13 +155,13 @@ function sync(dataLayout, taskProcessor, concurrency, callback) {
 
     safe.fs.closeSync(newCacheFd);
 
-    debug('Processing %s deletes and %s additions', delQueue.length, addQueue.length);
+    debug(`Processing ${delQueue.length} deletes and ${addQueue.length} additions`);
 
     async.eachLimit(delQueue, concurrency, taskProcessor, function (error) {
-        debug('Done processing deletes', error);
+        debug('Done processing deletes. error:', error);
 
         async.eachLimit(addQueue, concurrency, taskProcessor, function (error) {
-            debug('Done processing adds', error);
+            debug('Done processing adds. error:', error);
 
             if (error) return callback(error);