diff --git a/daemon/runner.py b/daemon/runner.py
index 3f9f658..3972339 100644
--- a/daemon/runner.py
+++ b/daemon/runner.py
@@ -77,9 +77,9 @@ def __init__(self, app):
         self.app = app
         self.daemon_context = DaemonContext()
         self.daemon_context.stdin = open(app.stdin_path, 'r')
-        self.daemon_context.stdout = open(app.stdout_path, 'w+')
+        self.daemon_context.stdout = open(app.stdout_path, 'w')
         self.daemon_context.stderr = open(
-            app.stderr_path, 'w+', buffering=0)
+            app.stderr_path, 'w', buffering=0)
 
         self.pidfile = None
         if app.pidfile_path is not None: