diff --git a/.gitea/workflows/build.yml b/.gitea/workflows/build.yml
index 8d98ba9..4395906 100644
--- a/.gitea/workflows/build.yml
+++ b/.gitea/workflows/build.yml
@@ -28,7 +28,7 @@ jobs:
             tools/
             zephyr/
             bootloader/
-          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('app/west.yml') }}
+          key: "${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('app/west.yml') }}"
           restore-keys: |
             ${{ runner.os }}-build-${{ env.cache-name }}-
             ${{ runner.os }}-build-