diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 8c3f3a32..1c40af12 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -390,6 +390,21 @@ jobs:
           pixi run python --version | grep -q 3.11
           pixi run test | grep -q "Hello world"
 
+  debug:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v4
+      - name: Move pixi.toml
+        run: mv test/default/* .
+      # test that setup-pixi does debug logging
+      - uses: ./
+        env:
+          ACTIONS_STEP_DEBUG: true
+      - run: pixi run python --version | grep -q 3.11
+
   test-cache1:
     name: Test cache 1/2
     timeout-minutes: 10
diff --git a/README.md b/README.md
index 7e72cb4f..da1e7f4a 100644
--- a/README.md
+++ b/README.md
@@ -164,12 +164,12 @@ There are two types of debug logging that you can enable.
 #### Debug logging of the action
 
 The first one is the debug logging of the action itself.
-This can be enabled by running the action with the `RUNNER_DEBUG` environment variable set to `true`.
+This can be enabled by running the action with the `ACTIONS_RUNNER_DEBUG` environment variable set to `true`.
 
 ```yml
 - uses: prefix-dev/setup-pixi@v0.4.1
   env:
-    RUNNER_DEBUG: true
+    ACTIONS_RUNNER_DEBUG: true
 ```
 
 Alternatively, you can enable debug logging for the action by re-running the action in debug mode: