diff --git a/src/borg/helpers.py b/src/borg/helpers.py
index 759291442..d6237c5be 100644
--- a/src/borg/helpers.py
+++ b/src/borg/helpers.py
@@ -1001,7 +1001,7 @@ def daemonize():
     os.close(0)
     os.close(1)
     os.close(2)
-    fd = os.open('/dev/null', os.O_RDWR)
+    fd = os.open(os.devnull, os.O_RDWR)
     os.dup2(fd, 0)
     os.dup2(fd, 1)
     os.dup2(fd, 2)