diff --git a/setup.cfg b/setup.cfg
index 849c3889..1badfcec 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -45,6 +45,7 @@ oslo.config.opts =
 source-dir = doc/source
 build-dir = doc/build
 all_files = 1
+warning-is-error = 1
 
 [upload_sphinx]
 upload-dir = doc/build/html
@@ -68,8 +69,6 @@ universal = 1
 
 [pbr]
 autodoc_index_modules = 1
-warnerrors = true
-
 
 [nosetests]
 match=^test