diff --git a/optional/unbound/start.py b/optional/unbound/start.py
index df768092..5710b6f6 100755
--- a/optional/unbound/start.py
+++ b/optional/unbound/start.py
@@ -10,4 +10,4 @@ system.set_env()
 
 conf.jinja("/unbound.conf", os.environ, "/etc/unbound/unbound.conf")
 
-os.execv("/usr/sbin/unbound", ["-c /etc/unbound/unbound.conf"])
+os.execv("/usr/sbin/unbound", ["unbound", "-c", "/etc/unbound/unbound.conf"])