diff --git a/doc/source/contributor/devstack-guide.rst b/doc/source/contributor/devstack-guide.rst
index 5ede164974..094bff6de7 100644
--- a/doc/source/contributor/devstack-guide.rst
+++ b/doc/source/contributor/devstack-guide.rst
@@ -195,7 +195,7 @@ enabled and use the ``ipmi`` hardware type with this config::
 
     # By default, devstack assumes you have IPv4 and IPv6 access. If you are on
     # a v4-only network, set the value below.
-    # IP_ADDRESS=4
+    # IP_VERSION=4
 
     # Swift temp URL's are required for the direct deploy interface
     SWIFT_ENABLE_TEMPURLS=True