diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 894b8758..b9cccffd 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -24,6 +24,7 @@ jobs:
     runs-on: ubuntu-20.04
 
     env:
+      # PCS_API_KEY: Raoul Strackx' personal access key. Only used here, and only provides access to the Intel PCS service, which is public anyway
       PCS_API_KEY: ${{ secrets.PCS_API_KEY }}
 
     steps: