diff --git a/save/README.md b/save/README.md
index fb6fe90..139b136 100644
--- a/save/README.md
+++ b/save/README.md
@@ -54,7 +54,7 @@ Case 1: Where an user would want to reuse the key as it is
 ```yaml
 uses: actions/cache/save@v3
 with:
-    key: ${{ steps.restore-cache.outputs.key }}
+    key: ${{ steps.restore-cache.outputs.cache-primary-key }}
 ```
 
 Case 2: Where the user would want to re-evaluate the key