diff --git a/.env.example b/.env.example
index feabf4f..896fa60 100644
--- a/.env.example
+++ b/.env.example
@@ -18,23 +18,15 @@ ZEN_DB_SSL_DISABLED=false
 # STORAGE
 # Fournisseur : 'r2' (défaut) ou 'backblaze'
 ZEN_STORAGE_PROVIDER=r2
-
-# Cloudflare R2 (ZEN_STORAGE_PROVIDER=r2)
-# Endpoint format : <accountId>.r2.cloudflarestorage.com
+# R2 endpoint : <accountId>.r2.cloudflarestorage.com
+# Backblaze endpoint : s3.<region>.backblazeb2.com
+# REGION optionnelle pour R2 (défaut : auto), obligatoire pour Backblaze
 ZEN_STORAGE_ENDPOINT=
-ZEN_STORAGE_REGION=auto
+ZEN_STORAGE_REGION=
 ZEN_STORAGE_BUCKET=
 ZEN_STORAGE_ACCESS_KEY=
 ZEN_STORAGE_SECRET_KEY=
 
-# Backblaze B2 (ZEN_STORAGE_PROVIDER=backblaze)
-# Endpoint format : s3.<region>.backblazeb2.com
-ZEN_STORAGE_B2_ENDPOINT=
-ZEN_STORAGE_B2_REGION=
-ZEN_STORAGE_B2_BUCKET=
-ZEN_STORAGE_B2_ACCESS_KEY=
-ZEN_STORAGE_B2_SECRET_KEY=
-
 # EMAIL
 ZEN_EMAIL_RESEND_APIKEY=
 ZEN_EMAIL_FROM_NAME="EXEMPLE"
diff --git a/src/core/storage/backblaze.js b/src/core/storage/backblaze.js
index 9cf6d60..a890174 100644
--- a/src/core/storage/backblaze.js
+++ b/src/core/storage/backblaze.js
@@ -1,27 +1,27 @@
 /**
  * Backblaze B2 provider config (S3-compatible API).
- * Reads ZEN_STORAGE_B2_* environment variables.
+ * Reads ZEN_STORAGE_* environment variables.
  *
  * Endpoint format: s3.<region>.backblazeb2.com (e.g. s3.us-west-004.backblazeb2.com)
  */
 
 export function getConfig() {
-  const host            = process.env.ZEN_STORAGE_B2_ENDPOINT;
-  const region          = process.env.ZEN_STORAGE_B2_REGION;
-  const accessKeyId     = process.env.ZEN_STORAGE_B2_ACCESS_KEY;
-  const secretAccessKey = process.env.ZEN_STORAGE_B2_SECRET_KEY;
-  const bucket          = process.env.ZEN_STORAGE_B2_BUCKET;
+  const host            = process.env.ZEN_STORAGE_ENDPOINT;
+  const region          = process.env.ZEN_STORAGE_REGION;
+  const accessKeyId     = process.env.ZEN_STORAGE_ACCESS_KEY;
+  const secretAccessKey = process.env.ZEN_STORAGE_SECRET_KEY;
+  const bucket          = process.env.ZEN_STORAGE_BUCKET;
 
   if (!host || !accessKeyId || !secretAccessKey) {
     throw new Error(
-      'Backblaze B2 credentials are not configured. Please set ZEN_STORAGE_B2_ENDPOINT, ZEN_STORAGE_B2_ACCESS_KEY, and ZEN_STORAGE_B2_SECRET_KEY.'
+      'Backblaze B2 credentials are not configured. Please set ZEN_STORAGE_ENDPOINT, ZEN_STORAGE_ACCESS_KEY, and ZEN_STORAGE_SECRET_KEY.'
     );
   }
   if (!bucket) {
-    throw new Error('ZEN_STORAGE_B2_BUCKET environment variable is not set.');
+    throw new Error('ZEN_STORAGE_BUCKET environment variable is not set.');
   }
   if (!region) {
-    throw new Error('ZEN_STORAGE_B2_REGION environment variable is not set.');
+    throw new Error('ZEN_STORAGE_REGION environment variable is not set.');
   }
 
   return { accessKeyId, secretAccessKey, bucket, host, region };