diff --git a/timeoutd.c b/timeoutd.c
index c3cf310..2de0596 100644
--- a/timeoutd.c
+++ b/timeoutd.c
@@ -351,9 +351,10 @@ char *argv[];
     if (pid > 0)
         exit(0);
 
-    close(0);
-    close(1);
-    close(2);
+    for (int i = getrlimit(RLIMIT_NOFILE); i >= 0; --i) {
+        close(i);
+    }
+
     if (setsid() < 0) {
         openlog("timeoutd", OPENLOG_FLAGS, LOG_DAEMON);
         syslog(LOG_ERR, "Failed to set new session ID at startup.");