diff --git a/docker/backend/start.sh b/docker/backend/start.sh
index 47b768e7d..71c59cb3d 100644
--- a/docker/backend/start.sh
+++ b/docker/backend/start.sh
@@ -203,6 +203,6 @@ sed -i "s!__LND_MACAROON_PATH__!${__LND_MACAROON_PATH__}!g" mempool-config.json
 sed -i "s!__LND_REST_API_URL__!${__LND_REST_API_URL__}!g" mempool-config.json
 
 # CLN
-sed -i "s!__CLN_SOCKET__!${__CLN_SOCKET__}!g" mempool-config.json
+sed -i "s!__CLIGHTNING_SOCKET__!${__CLIGHTNING_SOCKET__}!g" mempool-config.json
 
 node /backend/dist/index.js