diff --git a/bin/sau b/bin/sau
index 426bee2..9fba187 100755
--- a/bin/sau
+++ b/bin/sau
@@ -46,7 +46,7 @@ def init():
 
 def fork_and_reboot():
     log = logging.getLogger(sau.LOGNAME)
-    if os.path.exist('/proc/1/comm'):
+    if os.path.exists('/proc/1/comm'):
         with open('/proc/1/comm', 'r') as f:
             if f.readline().strip() == 'systemd':
                 os.execl('/usr/bin/systemctl', 'reboot')