diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index 6bf93bebc6..22e401d4c0 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -38,10 +38,10 @@ jobs:
       - name: Cache Coursier cache
         uses: coursier/cache-action@v6.4.0
 
-      - name: Set up JDK ${{ matrix.jdkVersion }}
+      - name: Set up JDK ${{ matrix.JDK_VERSION }}
         uses: coursier/setup-action@v1.3.4
         with:
-          jvm: ${{ matrix.jvmName }}
+          jvm: ${{ matrix.JVM_NAME }}
           # FIXME default index not giving us access to JDK 21 (yet)
           jvm-index: https://raw.githubusercontent.com/coursier/jvm-index/32d659500e6c65efb9eee91718a0fb0e797ad4ee/index.json