diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 7eac25c493..ece744a795 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -99,7 +99,7 @@ To develop locally:
 
    - Duplicate `.env.example` to `.env`.
    - Use `openssl rand -base64 32` to generate a key and add it under `NEXTAUTH_SECRET` in the `.env` file.
-   - Use `openssl rand -base64 24` to generate a key and add it under `CALENDSO_ENCRYPTION_KEY` in the `.env` file.
+   - Use `openssl rand -base64 32` to generate a key and add it under `CALENDSO_ENCRYPTION_KEY` in the `.env` file.
 
 6. Setup Node
    If your Node version does not meet the project's requirements as instructed by the docs, "nvm" (Node Version Manager) allows using Node at the version required by the project: