diff --git a/src/apptask.js b/src/apptask.js
index 1b864e732..648e93b22 100644
--- a/src/apptask.js
+++ b/src/apptask.js
@@ -785,6 +785,8 @@ function startTask(appId, callback) {
 if (require.main === module) {
     assert.strictEqual(process.argv.length, 3, 'Pass the appid as argument');
 
+    // add a separator for the log file
+    debug('------------------------------------------------------------');
     debug('Apptask for %s', process.argv[2]);
 
     process.on('SIGTERM', function () {
diff --git a/src/taskmanager.js b/src/taskmanager.js
index b0de865a3..9b22413ea 100644
--- a/src/taskmanager.js
+++ b/src/taskmanager.js
@@ -128,10 +128,10 @@ function startAppTask(appId, callback) {
 
     // ensure log folder
     mkdirp.sync(path.join(paths.LOG_DIR, appId));
-    var logFilePath = path.join(paths.LOG_DIR, appId, 'apptask-' + Date.now() + '.log');
+    var logFilePath = path.join(paths.LOG_DIR, appId, 'apptask.log');
 
     // will autoclose
-    fs.open(logFilePath, 'w', function (error, fd) {
+    fs.open(logFilePath, 'a', function (error, fd) {
         if (error) {
             debug('Unable to open log file, queueing task for %s', appId, error);
             gPendingTasks.push(appId);