diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 5cca2c7..f7fce85 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -52,7 +52,7 @@ jobs:
         run: |
           mkdir build
           cd build
-          cmake -S .. -G Ninja -D AP_BASE_URL PathwaysGenerator
+          cmake -S .. -G Ninja -D AP_BASE_URL=PathwaysGenerator
       - name: Build web app
         run: |
           cmake --build build --target web_app