diff --git a/readthedocs/rtd_tests/fixtures/spec/v2/schema.json b/readthedocs/rtd_tests/fixtures/spec/v2/schema.json
index d15142bff24..78a66b554e7 100644
--- a/readthedocs/rtd_tests/fixtures/spec/v2/schema.json
+++ b/readthedocs/rtd_tests/fixtures/spec/v2/schema.json
@@ -270,7 +270,7 @@
       "additionalProperties": false
     },
     "sphinx": {
-      "title": "Sphix",
+      "title": "Sphinx",
       "description": "Configuration for sphinx documentation.",
       "type": "object",
       "properties": {