diff --git a/.github/workflows/publish-book.yml b/.github/workflows/publish-book.yml
index 89dcb9478..7c7a531f9 100644
--- a/.github/workflows/publish-book.yml
+++ b/.github/workflows/publish-book.yml
@@ -49,7 +49,7 @@ jobs:
           echo ci/ >> .gitignore
 
       - name: Install Chatify and Add to Notebooks
-        if: "$CHATIFY == true"
+        if: "env.CHATIFY == true"
         run: |
           pip install -r ci/chatify/requirements.txt
           python ci/chatify/process_notebooks.py