diff --git a/tools/restart-server b/tools/restart-server
index c8bd0c89fe..88fa9c401e 100755
--- a/tools/restart-server
+++ b/tools/restart-server
@@ -14,6 +14,12 @@ logging.basicConfig(format="%(asctime)s restart-server: %(message)s",
 deploy_path = os.path.realpath(os.path.join(os.path.dirname(__file__), '..'))
 os.chdir(deploy_path)
 
+if os.path.exists("/etc/humbug-server"):
+    with open("/etc/humbug-machinetype") as mtf:
+        if os.getlogin() != "humbug":
+            logging.error("Must be run as user 'humbug'.")
+            sys.exit(1)
+
 # Send a statsd event on restarting the server
 subprocess.check_call(["python", "./manage.py", "send_stats", "incr", "events.server_restart", str(int(time.time()))])