diff --git a/docs/guide/installation.md b/docs/guide/installation.md
index ab29bec11..1ffe82b9d 100644
--- a/docs/guide/installation.md
+++ b/docs/guide/installation.md
@@ -129,6 +129,7 @@ destination="/data"
   HOST="127.0.0.1"
   PORT=5000
   LNBITS_FORCE_HTTPS=true
+  LNBITS_DATA_FOLDER="/data"
   
   ${PUT_YOUR_LNBITS_ENV_VARS_HERE}