diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 4fb8d183b..594aea04c 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -20,7 +20,7 @@ build:
   jobs:
     pre_build:
       - ford fortran_docs.md 
-      - BUILD_DOCS=1 pip install .
+      - DOC_BUILD=1 pip install .
 python:
   install:
     - requirements: docs/requirements.txt