diff --git a/doc/source/dev/devstack-plugin.rst b/doc/source/dev/devstack-plugin.rst
index 90af9f69b..aa8276efe 100644
--- a/doc/source/dev/devstack-plugin.rst
+++ b/doc/source/dev/devstack-plugin.rst
@@ -92,7 +92,7 @@ Edit `/etc/libvirt/libvirtd.conf` to make sure the following values are set::
 
 Edit `/etc/default/libvirt-bin`::
 
-    libvirt_opts = " -d -l"
+    libvirt_opts="-d -l"
 
 Restart the libvirt service::